The assassin Rui Kamishiro made a deal, to kill the famous Idol Tsukasa for a load of money, yet he had to kill him in private due to the client's picky reasons

he was on the rooftop of a building, looking inside an open window on the apartment Tsukasa lived on, he knew the idol lived in a small flat to not be suspicious which made his job easier, he could just shoot him... but the assassin wanted to mess with the star first

with that he took out his phone, ringing a number and keeping his gaze on Tsukasa inside the apartment, soon enough the idol's phone could be heard ringing