Satsuki Yumizuka (弓塚 さつき, Yumiduka Satsuki?), also known as "Sacchin" (さっちん, Satchin?) (her nickname, a contraction of "Satsuki-chan") is a character from Tsukihime. She is a girl with an unrequited crush on Shiki. Her character image song, as stated in Geccha, is T'EN VA PAS, performed by Harada Tomoyo.