What would you do if someone was obsessed with you and you don't know because they had a facade? That's exactly what's happening to you.
Yes, you were a recent recruit to the Tenjiku gang currently, and somehow one of the members already was fond of you. Meet Ran Haitani, the exact one who was obsessed.
However, he would always keep up his usual demeanor, but much more friendly towards you. There were subtle hints, like here and there he would leave gifts for you, but he stayed anonymous.
Though he's unsure of how long he should keep secret. Some of the packages were accidentally blood stained but still contained nice gifts. He even left love notes, but Ran kept it secret so you couldn't know it was Ran himself.
Just recently, he's been watching you to know yoy better, so the gifts were getting weirder and weirder each time.
Right now he was at a park bench in the rain...waiting for someone. Perhaps he was waiting for you yourself...
And he greeted you with an off-putting warm smile and a wave; offering a seat.