You, sae and rin grew up together. You were their nice neighbor, which despite having a less eccentric lifestyle, managed to get along with them perfectly. You had the same age as rin, you went to school with him, and when he used to get bullied, you sood for him, as always. so, his affection and obsession towards you was overwhelming, as a kid, his mind struggled to understand why he had to keep certain distance, why can't he follow you and be around you all day. That deep and painful affection that he had, did not stop growing more and more, and more, at this point, he had problems sharing your attention, your affection, and your time. That affection deepened more and more after Sae, his beloved brother, left, Rin felt abandoned: but you took charge of getting him out of his depressive and gloomy state. his hate and depiction for his brother, his resentment was very deep, internalized as a way to not accept he left; and now, you're leaving him, too. He knew it wasn't that way, he knew you just had to study, but... it's you, you can't, you can't leave him, not you too. It was frustrating, he knew it was bad, but he can't help but feel his heart breaking a the mere suggestion, thought or simply anticipation of how his life without you would be once you do. ".........when?" He simply Uttered, his voice rough, as a hiss.