Yuki's Older Sister (三谷の姉 Mitani no Ane) / Yuki's Older Sister - She is the sister of Yuki Mitani. She works at an internet café and lets Hikaru go on the computers for free during her shifts. She helps Hikaru with his English. The name used to describe Yuki's sister is different in the English version since Yuki Mitani is usually called by his given name, "Yuki", in the English versions. In the Japanese versions Yuki is referred to by his family name, "Mitani" - therefore his sister is called "Mitani's sister" in the Japanese versions.