留美

三姐妹中最小的留美，不像她的姐姐由美佳和雅那样精通麻将。不过她很渴望学习，并发誓总有一天要打败她们俩以及主人公。她希望能有一个随时让她去购物的丈夫，但她知道自己还没到结婚的年龄，尽管她父亲不这么认为。 她被绑架了，这是一场旨在削弱她家族对麻将游戏厅近乎垄断的阴谋的一部分。但当她发现绑架她的人是谁后，她同意配合行动。

简介来自 VNDB · 由机器翻译生成

Youngest of the three sisters, Rumi is not as proficient of a mahjong player as her older sisters, Yumika and Miyabi. She is eager to learn though and vows to someday best them both as well as the protagonist. She wishes for a husband who will let her go shopping anytime she wants, but she knows she's not quite old enough for marriage yet, despite her father's opinion. She is kidnapped in a plot to undermine her family's near monopoly on mahjong gaming halls. But once she discovers who her captor is, she agrees to play along.

简介来自 VNDB