あつすぎの歌 (Atsusugi no Uta, "The Too-Hot Song") is an original composition by からめる (Karameru), a Japanese illustrator and self-described "kusodouga creator" (crap-video creator) who handled every aspect of the track, composition, arrangement, lyrics, vocals, and music video production. The song joined maimai DX FESTiVAL PLUS on July 7, 2023, as part of the POPS & ANIME category. The song is built around a simple, universally relatable premise: summer is unbearably hot, and the protagonist cannot bring himself to enjoy any of the seasonal activities he supposedly wants to do. The lyrics cycle through beach trips, festivals, and summer vacations, each dismissed in favor of staying home in air conditioning, blaming "the heat" for all the world's ills. Karameru's deadpan vocal delivery and the exaggerated opening lines (the iconic "あつすぎいいいいい！！！！！") give the track a self-aware, comedic tone that resonated widely with players. On the gameplay side, the Master chart (level 13+, constant 13.8, designed by はっぴー) made an immediate impression with 242 BREAK notes, a record for any non-UTAGE chart at the time of its release, surpassing the previous holder The wheel to the right. The chart funnels its density into climactic moments, particularly a rest section during an interview sequence where players can recompose themselves before the final barrage. The Expert chart (level 10, designed by サファ太) also features a notably high BREAK count (164), giving both upper difficulties a distinctive crackling texture.