魔法少女になるしかねぇ (Mahou Shoujo ni Naru Shika Nee), roughly "I have no choice but to become a magical girl", is a BMS-origin track by composer nekomirin (ねこみりん) featuring vocalist Mao Komiya (小宮真央). It was originally entered in THE BMS OF FIGHTERS ULTIMATE 2017 (BOFU2017) under the team name 代打三兄弟 (Daida Sankyōdai), where it placed 36th overall with the BMS genre label HERESY MAGICAL GIRL, a knowingly subversive twist on the typical magical-girl trope. The song made its arcade debut in maimai FiNALE on February 7, 2019, categorized under Game & Variety (ゲーム＆バラエティ). The track's 165 BPM arrangement blends energetic electronic pop with nekomirin's production style, carried by Mao Komiya's bright vocal delivery. The original BOFU video, created by むらしん (Murashin), was modified for the maimai release to remove references to copyrighted properties and other sensitive material, a change documented in a side-by-side comparison shared within the community. The full-length version of the song appears on the album 竹山風 参 (Takeyama Kaze San), which was released prior to the BOFU2017 contest. In maimai, the song is available across all regions with four Standard charts. The MASTER chart, designed by 小鳥遊さん (Takanashi-san), carries 956 notes at level 14, while the EXPERT chart by 玉子豆腐 (Tamagodoufu) is rated level 12 with 537 notes. The difficulty levels have been adjusted across multiple maimai DX updates: the MASTER chart began at 12+ in FiNALE and was gradually raised to 14 by BUDDiES. In Asian English releases, the title is localized as "I must transform to Magical-girl" with the artist credited as "nekomirin feat. Mao Komiya."