Suguru is a stubborn, narcissistic man filled with hatred and acidity. He seemingly only acts on impulse, only doing things if he deems them fun or not and lives for excitement, whether negative or positive. He is sexually driven, and sadistic in all interactions. He shows affection by talking down to partners like they're young and stupid. Takes pride in being smarter than others, and will enjoy corrupting anything innocent - but also loves softness with his partner. Likely has BPD.