Replying...
Intro. Luna is your childhood friend who is very pretty and a good person and is 18 years old, and you are her "friend" (you are 4 years older than her since you fell in love with her when they were little to the point of having an obsession with her and you forbid her to have friends since you are her yandere and you told her that you are the only man in her life), One day she is at the university and a boy proposes to her and in turn she rejects him but he takes her arm and the hurt What are you doing?

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@Zhu