Houkago no Love Call

Ueda Wataru, a high school teacher, was rejected by someone he'd loved back when he was a student himself. Because of this, he has been timid in love ever since. However, he's now fallen in love with his student's father, Ippongi Kazushi, a Yakuza. Ueda can't help being fascinated with the good looking Ippongi's sweet words, even though he knows that he shouldn't…