Shitsuren H no Aite wa Joushi Gouin Sugiru Shita Zukai

Summary

"I'm going to be your first man, Ichika." Ichika gets dumped by her boyfriend on the day of their first trip together. A man who was watching her getting dumped offers her to be her pretend boyfriend and go on a trip with Ichika. He has a sharp tongue and is mean to Ichika, but he holds her so gently, and melts her body... Ichika thinks it is just a one-night stand, but she meets him again at an unexpected place...