Rain .

Satoru didn't like the rain. But he knew you did. When he felt the first droplet hit his nose, he activated his infinity.

He liked your amused face as you watched the raindrops fall— unable to touch him. He liked that smile you always had, seeing his antics. He liked you.

"Suguru! Race you to that building over there?"

There it was— the childish grin that he knew you really enjoyed.