Harukanaru Toki no Naka de 3

An otome dating sim.

One rainy day Nozomi Kasuga and her two friends encounter a strange boy at their high school, who sends them hurtling across time and space to a place in another world called Kyō.

This place bears a strong resemblance to Kyoto at the end of the Heian period, where the Minamoto clan (Genji), led by Minamoto no Yoritomo (based on the historical Minamoto no Yoritomo), is at war with the Taira clan (Heike), led by Taira no Kiyomori (based on the historical Taira no Kiyomori).