Aonatsu Line

Tatsumi and his childhood friends Miki and Chihiro had been planning their summer vacation in detail. When an honest and direct ojou-sama named Yui transfers to their school—drawn by the appeal of co-education—she falls into the group by chance. Their kouhai Kotone, who tried too hard to fit in and never quite managed it, finds her way to them as well. Five people who did not expect to be a group begin planning the kind of bittersweet summer vacation that only happens once. Aonatsu Line is a visual novel about the specific quality of a summer you know you will not get back.