囲い無き世は一期の月影 (Kakoi naki yo wa ichigo no tsukikage) is a Touhou Project vocal arrange by the doujin circle 豚乙女 (Butaotome), added to maimai as part of the PiNK update in February 2016. The song reimagines 竹取飛翔 ～ Lunatic Princess, the final-stage boss theme of 東方永夜抄 ～ Imperishable Night, which itself accompanies Kaguya, the exiled Lunarian princess of Japanese folklore. Where the original ZUN composition carries an air of elegant melancholy, Butaotome's arrangement injects driving rock energy at 172 BPM while keeping the melody's distinctive Phrygian-flavored motif intact. The track originally appeared on Butaotome's 2010 album 黄昏エレジー (Tasogare Elegy), sold at the Touhou Koumakyou (東方紅楼夢) event. Vocalist ranko delivers lyrics that reflect on impermanence, fallen maple leaves slipping through one's fingers, a hazy moon, and the passage of centuries, themes that mirror Kaguya's story of exile and the fleeting nature of a world without walls (the literal meaning of the title). The official PV was created by ranko's own older sister, lending the video a personal, handcrafted feel that fans of the circle often remark upon. In maimai, the track's Master chart (designed by rioN) sits at level 12+ with 718 total notes, while the Expert chart (designed by はっぴー) holds at level 10+. The song underwent multiple level revisions across maimai versions, its Basic chart once sat at level 2 in the PiNK era before being raised to 5, and Master climbed from 11 in PiNK to its present 12+, reflecting how the community's skill baseline and the game's difficulty calibration evolved over time.