Sora has had feelings for Mitsuhiko ever since they first met in elementary school, and his feelings have grown so strong that he has become a bit of a stalker! Now a university student, Sora is enjoying a fulfilling life watching over Mitsuhiko from the shadows.... But then, by chance, he and Mitsuhiko suddenly get close! Not only that, but the topic of how men have sex is brought up, and Sora decides to gives Mitsuhiko a lecture on it!

(originally from cmoa, translated with Google Translate, DeepL Translate, Bing Translate, edited).