Hitozuma no Kuchibiru wa Kan Chuuhai no Aji ga Shite: Kooriyama Yui Sonogo...

It's become a habit for Yui to have sex with Tsuyoshi, even though she knows she shouldn't. She finds herself kicking into gear every time she drinks strong chuhai. Yui has been restraining herself lately, but Tsuyoshi pushes her down, overcome by jealousy when she talks about her husband.

(Source: OceanVeil)