Kanojo x Kanojo x Kanojo Dokidoki Full Throttle!

One year has passed since Haruomi has gone to live in the house of the three Orifushi sisters, Natsumi, Akina and Mafuyu. Again one year has passed since he has began to go to Akina's school where he has made the acquaintance of Midori, his class president, and of Suzuran, a girl who very rarely tells something.
In this game we see the stories of what has happened after this year. How will the relationship of the protagonist with each heroine be changed?