Koikimo.

One rainy day, salaryman Amakusa Ryou is saved by a high school girl he doesn't know at the station. He later finds out that the girl is Arima Ichika. Ryou is somewhat of a womanizer and to repay her for saving him, he suggests giving her a kiss or going out on a date with her, in which Ichika tells him he's creepy. This, however, opens a new…