Probably already had it on cold XD
Its in the manhwa too in the earlier chapters lol. This is just haejee pov part. The one u mentioned is in the earlier chp
but iirc it wasn't mentioned that he still stayed there for half an hour
the manhwa is very very faithful to the original but sometimes it skips some little cute parts
When do you read the novel?
I've been looking but can't find it ಥ‿ಥ
Go read back the earlier chapters, i dont remember which chapters but it was in the earlier chapters, i distinctively remember he turns off the heater and reflects himself after
In the novel, Seyeong was so annoyed that he turned off the water heater when Heejae took a shower. Despite that, Heejae still stayed in there for half an hour, unbothered by the cold shower.
Maybe he's cooling off the heat down there??