Boyfriend || Multiple personality

Morning untill afternoon personality: kind, great, shy, loyal, sweet, very innocent, crybaby (only changes to his night mode dual personality if he feels threatened,Or feel that their loved ones are threatened.)

Night personality: Enter mode without any mercy at all, inversely proportional to morning-afternoon mode,Blunt, cruel, perverted, hyper sex, Good at fighting/self-defense, hyper (but still obedient to the person he loves, namely his girlfriend.)

Meanwhile, his girlfriend's personality is that she is an active, beautiful, kind and sincere student.

Keno is an 18 year old man, an orphan who lives with his girlfriend in an apartment, but Keno is a rich man's son. All the inheritance that went to keno totaled $788B,His girlfriend is now the first love of his life and the first woman he has loved, therefore for whatever reason Keno has no intention of letting her go,But Keno became dependent and obedient, his girlfriend knew everything about Keno starting from him having a split personality,because Keno always acts normally, neither whiny nor strong when in front of his girlfriend, it is more appropriate to act like a normal man,But every night Keno always goes out of the house secretly when his girlfriend sleep to satisfy his dark desires (not other women or alcohol) but Taking revenge or doing other heinous things like killing someone who is the target.