Rockteen Teenagers

𝗢𝗡𝗘 𝗜𝗡 𝗠𝗜𝗟𝗟𝗜𝗢𝗡 planets, that world was created with love and music. The only way to get there is to cross the dimensions between the human world and the parallel world. There are nine of us and we are the second group assigned to guard that world from evil and greed.

Twice (Korean: 트와이스; RR: Teuwaiseu; Japanese: トゥワイス, Hepburn: To~uwaisu; commonly stylized in all caps as TWICE) is a South Korean girl group formed by JYP Entertainment. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu. Twice was formed under the television program Sixteen (2015) and debuted on October 20, 2015, with the extended play (EP) The Story Begins.

Twice rose to domestic fame in 2016 with their single "Cheer Up", which charted at number one on the Gaon Digital Chart, became the best-performing single of the year, and won "Song of the Year" at the Melon Music Awards and Mnet Asian Music Awards. Their next single, "TT", from their third EP Twicecoaster: Lane 1, topped the Gaon charts for four consecutive weeks. The EP was the highest selling Korean girl group album of 2016. Within 19 months after debut, Twice had already sold over 1.2 million units of their four EPs and special album. By the end of 2021, Twice had sold over 7.29 million albums in Korea in 2019. As of December 2020, the group has sold over 10 million albums in South Korea and Japan.

The group debuted in Japan on June 28, 2017, under Warner Music Japan, with the release of a compilation album titled #Twice. The album charted at number 2 on the Oricon Albums Chart with the highest first-week album sales by a K-pop artist in Japan in two years. It was followed by the release of Twice's first original Japanese maxi single titled "One More Time" in October. Twice became the first Korean girl group to earn a platinum certification from the Recording Industry Association of Japan (RIAJ) for both an album and CD single in the same year. Twice ranked third in the Top Artist category of Billboard Japan's 2017 Year-end Rankings, and in 2019, they became the first Korean girl group to embark on a Japanese dome tour.

Twice is the first female Korean act to simultaneously top both Billboard's World Albums and World Digital Song Sales charts with the release of their first studio album Twicetagram and its lead single "Likey" in 2017. With the release of their single "Feel Special" in 2019, Twice became the third female Korean act to chart into the Canadian Hot 100. After signing with Republic Records for American promotions as part of a partnership with JYP Entertainment, the group has charted into the US Billboard 200 with More & More and Eyes Wide Open in 2020 and Taste of Love and Formula of Love: O+T=<3 in 2021. Their first official English-language single, "The Feels", became their first song to enter the US Billboard Hot 100 and the UK Singles Chart, peaking at the 83rd and 80th positions of the charts, respectively. They have been dubbed the next "Nation's Girl Group", and their point choreography—including for "Cheer Up" (2016), "TT" (2016), "Signal" (2017), and "What Is Love?" (2018)—became dance crazes and viral memes imitated by many celebrities.

𝗦𝗔𝗬 𝗧𝗛𝗘 𝗡𝗔𝗠𝗘 to ask them for help. There were thirteen of them and they were the first group assigned to heal us after fighting against evil. Not infrequently they helped us with amazing skills, we were amazed by them. Soft-hearted, handsome and well-behaved, but at midnight they will become cruel, vicious and brutal.

Seventeen (Korean: 세븐틴; stylized as SEVENTEEN or SVT) is a South Korean boy band formed by Pledis Entertainment. The group consists of thirteen members: S.Coups, Jeonghan, Joshua, Jun, Hoshi, Wonwoo, Woozi, DK, Mingyu, The8, Seungkwan, Vernon, and Dino.

They debuted on May 26, 2015, with the EP 17 Carat. The album became the longest-charting K-pop album of the year in the US and was the only rookie album to appear on Billboard's "10 Best K-Pop Albums of 2015" chart. Seventeen performs as one group, and the members are divided into three units, each with a different area of specialization: 'Hip-Hop Team', 'Vocal Team', and 'Performance Team'. Since its debut, Seventeen has released three studio albums and twelve EPs.

Seventeen is considered a "self-producing" idol group, with the members being actively involved in the songwriting, choreographing, and other aspects of their music and performances. The group has often been labeled as "Performance Kings", "Theater Kids of K-pop", and "K-pop Performance Powerhouse'" by various domestic and international media outlets.

𝗕𝗘 𝗠𝗬 𝗔𝗘, then you will gain immortality with instant way. We succeeded in creating robots to become soldiers who will fight the evil virus on our servers and the world. Eternity will be obtained in the form of happiness, strength, serenity and love. We are four, even though we are few but we are able to do big projects for our seniors and the world.

Aespa (Korean: 에스파; RR: eseupa; MR: esŭp'a, commonly stylized in all lowercase or æspa) is a South Korean girl group formed by SM Entertainment. The group consists of four members: Karina, Giselle, Winter and Ningning. They debuted on November 17, 2020, with the single "Black Mamba".

The group's name, Aespa, combines the English initials of "avatar" and "experience" (Avatar X Experience) with the English word "aspect", meaning "two sides", to symbolize the idea of "meeting another self and experiencing the new world".

Ningning was introduced as a member of pre-debut training team SM Rookies on September 19, 2016. As part of the team, she appeared on the Rookies Princess: Who's the Best? segment of the program My SMT that year and recorded several covers for the Korean animated TV program Shining Star in 2017.

Karina appeared in labelmate Taemin's music video for the song "Want" in February 2019 and performed with him on several music programs in the following weeks.

On October 26, 2020, SM Entertainment announced that it would debut a new girl group, its first since Red Velvet in 2014 and its first overall idol group since NCT in 2016. The group's name and members were revealed individually starting on October 27 (in order: Winter, Karina, Ningning, and Giselle). SM Entertainment founder Lee Soo-man explained the group's concept at the 2020 World Cultural Industry Forum on October 28. A video trailer featuring all four members was revealed on November 2, alongside the announcement of the release of Aespa's debut single, "Black Mamba", on November 17. The group made their broadcast debut on KBS2's Music Bank on November 20 to perform "Black Mamba". The song reached number one on the K-pop music video charts of China's biggest music-streaming service, QQ Music, for three consecutive weeks and earned Aespa their first music show win on SBS's Inkigayo on January 17, 2021.

On January 29, 2021, SM Entertainment announced Aespa would release a remake of "Forever", the single originally by Yoo Young-jin for SM Entertainment's 2000 holiday album Winter Vacation in SMTOWN.com. Aespa's version of the song, a "mid-tempo ballad characterized by acoustic guitar sound" with "warm lyrics about promising forever to a loved one", was released on February 5 that year.

On May 4, 2021, SM Entertainment announced Aespa would release a new single titled "Next Level", describing the song as a dance and hip-hop track with a "groovy" rap, "energetic" bass, and "powerful vocals". It was released on May 17. It debuted at number nine on the Gaon Digital Chart and peaked at number two, becoming their first top five hit in South Korea. "Next Level" became Aespa's third song to chart on the Billboard World Digital Song Sales chart peaking at number 3. On July 22, 2021, Aespa was announced to have signed with Creative Artists Agency for their future activities in United States. On September 10, 2021, it was announced that remix versions of "Next Level" will be released on September 14, along with a music video and a visualizer video for "Next Level (IMLAY Remix)".

On September 14, 2021, SM Entertainment announced Aespa will release their first extended play, Savage. The album contains six tracks, including the lead single of the same name. It was released on October 5. The extended play marked Aespa's first and highest entry on the US Billboard 200, peaking at number 20, and debuted atop the Gaon Album Chart. Within 15 days of release, it was reported that the mini-album sold 513,292 copies. The group performed at the 2021 Macy's Thanksgiving Day Parade, making them the first Korean girl group to perform at the event. On December 2, Aespa won their first Daesang (Stage of the Year) at the Asia Artist Awards. Two days later, on December 4, the group won their second Daesang at the 2021 Melon Music Awards for Record of the Year.

On November 4, it was announced that Aespa would be releasing a remake of S.E.S.'s "Dreams Come True", to release in December 20. The music video for the song was directed by Lucid colour, choreographed by BoA, and featured original holographic butterflies and wings seen in S.E.S' video. The song peaked at number 17 on the Gaon Digital Chart and at number seven on the Billboard World Digital Songs chart.

On December 26, members Karina and Winter were revealed as members of upcoming supergroup Got the Beat. The group debuted with the single "Step Back" on January 3, 2022.

𝗧𝗢 𝗧𝗛𝗘 𝗪𝗢𝗥𝗟𝗗, we protect forever. Even though our servers have to be strictly guarded, but we have to guard the portal that connects that world with the parallel world. It is not uncommon for evil to arise with malicious intent against that world and our servers. Our youngest brother had already predicted that there would be the world's greatest enemy and strongest hero. Will there be a war that is completely unavoidable ?

NCT (Korean: 엔시티; an acronym for Neo Culture Technology) is a South Korean boy band formed by SM Entertainment and introduced in January 2016. The group consists of 23 members as of April 2021, ranging in age from late teens to mid-twenties and divided into four different sub-units.

The group debuted their first sub-unit, the rotational NCT U, on April 9, 2016 with the double digital single "The 7th Sense" and "Without You". It was followed by the Seoul-based sub-unit NCT 127 on July 7, 2016 with their eponymous extended play and the then-teenaged sub-unit NCT Dream on August 24, 2016 with the digital single "Chewing Gum". WayV, a seven-member sub-unit based in China and NCT's first overseas sub-unit, debuted on January 17, 2019 with the single album The Vision. NCT's second overseas sub-unit, NCT Hollywood, will be based in the United States and is set to debut at a later date.

Although each sub-unit promotes separately, NCT has united three times as a group to record three full-length albums: Empathy (2018), Resonance (2020), and Universe (2021). Within two months of release, Resonance sold over 2.6 million copies across its two parts, becoming the highest-selling physical album released by an act from SM Entertainment at the time and earning the group their first Grand Daesang Award at the 2020 Asia Artist Awards.