Koi Shika Dekinai yo

Highschool Teacher Umehara-sensei has been transferred from an all-boys to an girls highschool when he meets his former pupil now university student Hataoka Kei. They start meeting each other to drink together. Umehara-sensei feels a bit weird to drink with his former pupil. But how much weirder would he feel if he could know that Kei has an...