『んっあっあっ。』 is a niconico & VOCALOID track by producer SLAVE.V-V-R featuring Hatsune Miku, added to maimai でらっくす FESTiVAL on March 10, 2023. The song's title is an onomatopoeic rendering of gasping sounds, the Japanese characters spell out "Nn-ah-ah.", and the lyrics revolve around hyperpnea, breath control, and the desire to embody a "Diva." Lines like "声帯のBebop" (vocal-cord bebop) and "ブレスの支配" (domination of breath) paint a playful but intense picture of a singer possessed by their own breathing. The track originally appeared on SLAVE.V-V-R's 2021 album of the same name. In maimai, the song is best known for its Master chart (Level 12+, constant 12.8) designed by はっぴー. With 221 Touch notes out of 897 total, one of the densest Touch-note arrangements at this difficulty level, the chart demands rapid, precise palm-and-finger coordination alongside standard Tap, Hold, and Slide patterns. The 94 Break notes add further scoring pressure, making it a distinctive physical challenge within the FESTiVAL song list. The Expert chart (Level 9) by アマリリス offers a more conventional path with a focus on Hold notes, while the Basic and Advanced charts serve as approachable introductions to the song.