In the middle of their "Real Project" pre-debut series, Boy Story made an appearance on the 2018 'Lantern Festival Joy Party (Yuan Xiao Xi Le Hui / 元宵喜乐会)', a special program of channel Hunan Satellite TV that airs annually in celebration of China's Lantern Festival.

The members were involved in writing the lyrics and composing the music for the album, which thematically tells about the joys, sorrows and inner changes in growing up and announcing the group's transformation from being boys to being teenagers.

[10][11] On May 6, the group held their first online concert in China titled "STAGE: On Air" in collaboration with the short-video mobile platform Tencent Weish.

The concert was sponsored by the Korea Agro-Fisheries & Food Trade Corporation and is evaluated to have "opened a new chapter for the Korea-China exchange relationship in the untact time.

"[12] On July 4, Boy Story held the second date of their "STAGE: On Air" online concert, amassing over 3,380,000 viewers in real-time.

[14] On September 1, Boy Story held the third and final date of their "STAGE: On Air" online concert, recording over 1.35 million concurrent viewers.

[16] The group then released the song "WAI" on October 28, as part of the official soundtrack for the Chinese web drama Airbenders.