恋の氷結おてんば湯けむりチルノ温泉 is a Touhou Project doujin arrangement that premiered in maimai でらっくす CiRCLE on February 20, 2026. The track is a collaboration between two key members of the renowned doujin circle IOSYS, arranger uno and lyricist Yoshimi Youno (夕野ヨシミ), with vocals by miko. It remixes two Cirno-related themes from ZUN's original soundtracks: "おてんば恋娘" (the stage 2 boss theme from 東方紅魔郷 ~ the Embodiment of Scarlet Devil) and "春の氷精" (the title theme from 妖精大戦争 ~ 東方三月精). The song originally appeared on IOSYS's 2010 doujin album 東方浮思戯革命, with an accompanying music video directed by niji. The title itself is a playful fusion of opposites, "ice-cold" (氷結), "tomboyish" (おてんば), and "steamy hot spring" (湯けむり温泉), reflecting Cirno's ice-based character thrown into an incongruous hot spring setting. At 188 BPM, the arrangement is energetic and comedic, with lyrics built around Cirno's signature boastful personality and well-known Touhou fandom catchphrases. In maimai, the song sits in the 東方Project category and offers DX charts spanning from Basic (level 3) up to Master (level 13, constant 13.3), with the Expert chart designed by ロシェ@ペンギン (Rocher@penguin) and the Master chart by Luxizhel.