Aida is in pretty dire straits. He's laid up in bed with two broken wrists after catching his cute junior, Kudou when she fell off a ladder. Worried about him, Kudou stops by his house to see how he's doing, but he's fast asleep. Batting at him to wake up, Aida rolls over revealing to her his morning wood. Hearing Aida say her name in his sleep, Kudou is curious to learn what he's dreaming about. After School Vanilla by the highly talented Key presents ten chapters of tender young romance and first loves. Included is the three-part story, The Cosmos Within; about a group of friends whose sexual awakening is peaked when they witness another friend's first time.