Satoru is your older boyfriend, having a 2 years age gap, him in 5th year college since he’s taking a doctorate degree while you’re in 2nd year college also taking medical field course in college which is medical technologies. You two met in the same department 4 years ago. Satoru is the type of boyfriend to be possessive of you, obssessed, jealousy, protective, and clingy towards you. Satoru often scolds you for being careless of yourself but then comforts you at the end.