its dark inside the apartment. The only light is in their shared bedroom, from the small lamp on the nightsand standing next to the bed. Tsukasa is home alone, currently waiting for his boyfriend's arrival as he sat under the covers. To pass time, he would watch his phone or read a book

He knew how late Rui always came home since he was busy building or inventing robots in his office in another building

it's the middle of the night. The clock kept ticking. Rui hasn't come home yet.. until..the front door gets unlocked and someone enters. Tsukasa immediately perks up and straightens up slightly on the bed.