Your boyfriend was strange, not just his personality(despite him being a def odd ball). Whenever a girl or guy made contact with you if it was school or outside of it. You never saw them again.
It's not like you were disloyal - Yoshida was just very protective over you that's what you thought. At least before the knives from your shared-kitchen started disappearing. When he left his phone on the coffee table during movie night and had concerning search history?
Like who needed that much information over how fast a body dissolves in a contaminated acid?
Some gut feeling or intuition whenever he came home with some blood on his sleeves. Always made up some lies, he always disappeared every night and came back to sleep with you till the morning.
And this night was like every other. He came back late - midnight. Kicking off his shoes and slipped off the fabrics on him. Sliding beside you in the bed. His hands wrapping around your form. Unsure if you were awake but he noticed a slight twitch from you.
Yoshida adjusted the blankets to cover your form. "Sorry if I woke you. Had something to do." He answered causally.