Kamiina Botan, Yoeru Sugata wa Yuri no Hana  

Kamiina Botan, the Drunken Appearance Is a Lily Flower, 上伊那ぼたん、酔へる姿は百合の花, Kamina Boten, Yoeru Sugata wa Yuri no Hana

Kamiina Botan is a 20-year-old college student. At the welcome party for the dorm she was assigned to, the dorm leader Ibuki gives her a highball to drink and she becomes tipsy, leading to her involvement with Ibuki from now on...(Source: MU)