Stringendo: Angel-tachi no Private Lesson - Season 1

Based on the manga by Seto Yuuki. Tomohisa and Endou are average-looking male students. They often gaze at Mizuho, a senior returnee student known for her beauty, and at their classmate Mikura. Mizuho notices their attention and directs a suggestive look at Tomohisa. One day, Tomohisa discovers a note in his desk instructing him to go to the third-floor ladies' room. He finds Mizuho waiting for him there. The following day, he is preoccupied with memories of that encounter. He then notices both Endou and Mikura, whom he secretly loves, are absent. He fears they are together, which proves correct when he finds them on the fire escape.