Waiting in the Summer

Kirishima Kaito, currently in his first year of high school, holds an 8 mm camera in one hand and views the scenery around a lake through its viewfinder. But then a strange light from the sky comes down, and a blast of wind plunges him into the lake. The next time Kaito opens his eyes he's lying in bed in his own room, for some reason. The same day a red-haired girl named Takatsuki Ichika transfers into Kaito's school... (Source: Crunchyroll)