April. Rainy morning. Cherry blossoms that were beginning to wither were knocked down by raindrops and floated on the puddles. Students holding colorful umbrellas passed through the gate of the high school. "Good morning, Ren." In front of the shoe cabinet, Ren, whose pantyhose were soaked, was called by Yua. Ren, who looked a little melancholy, turned around and saw Fanmei, who was soaked all over, jumping towards them and talking lively. The meaningless conversation between the three female students announced the arrival of the new semester to the classroom. The irreplaceable and precious time of the girls flew forward, and the seasons gradually changed...