Toshiki Miyamizu

Toshiki Miyamizu, one of the main side characters. He is shown to be a very busy man and is also Mitsuha Miyamizu's father, after is wife passed away he was in a depressed state, which he was told to go which he went and currently unknown where he lives.

We don't know if he survives while the comet, but he's clearly stated to be unknown too.