KEMONONA WATASHI TO YOIMASEN KAKemonona Watashi to Yoimasen ka; ケモノな私と酔いませんか？; Would You Like to Get Drunk With Me?

Tomo-kun, an office worker, is neighbors with Aki-san. Aki often comes over to Tomo's house to drink alcohol with him, but when she gets drunk her secret is revealed, she's actually... part cat! As Tomo-kun continues his life, other part-animal Onee-sans will come to drink with him (summary updating)