A brief description of the Isekai Ryouridou manga:
The son of the tavernager Tsurumi Asuta is 17 years old. He goes to school and helps his father serve clients who drop by “Tsurumi-ya” for a bite to eat. But being torn out of this calm routine, the kid is transported into a world full of terrible monsters with which he will have to fight. It’s good that after battles he is comforted by local damsels. Yes, and they feed well here.