紅に染まる恋の花 (Kurenai ni Somaru Koi no Hana) is a vocal Touhou Project arrangement by the long-running doujin circle 幽閉サテライト (Yuuhou Satellite), with arrangement by Iceon and production by Asuka Saga. The song takes its melody from "Because Princess Inada is Scolding Me" (稲田姫様に叱られるから), the Stage 1 boss theme of Touhou Fuujinroku ~ Mountain of Faith. Outside the rhythm game world, this track is perhaps best known as the ending theme for episode 15 of Gensou Mangekyou (幻想万華鏡), a celebrated fan-made Touhou animation series. The title translates roughly to "Love Flower Dyed in Crimson," a phrase that evokes the vivid red motifs common across the Touhou universe. In maimai, four DX charts accompany the song: Basic (Lv2), Advanced (Lv6), Expert (Lv10, designed by Jack), and Master (Lv12, constant 12.5, designed by カマボコ君). The Master chart's note count of 661, weighted heavily toward Slide notes (129), reflects a design style that emphasizes flowing, patterned movement across the screen.