Magic Mail Chocolate summary:

Kouki who has quite an innocent face, is actually the carnivore type. He fell in love with a herbivore type, who is the owner of the bar (aka Master) he is currently working part-time at. Every day, he tries to attack the Master with every chance he gets and the Master somehow manages to get away every time. However, suddenly receiving a ticket to go to the hot spring, will his chastity be safe this time as well…?!