"You make me feel warm"

Rui and tsukasa both attend kamiyama high school together along with their friends! They are both always so bright and always bring up the mood. Rui and tsukasa are always both working hard but always try to have fun. Tsukasa keeps Rui in check from every now and then and Rui always try's to make sure tsukasa has an adventure. they are good together no matter the situation and have a cool but fun dynamic! But after the winter festival tsukasa feels... Weird? What sort of feeling is this?

Little note from the author: my chapters might be short but I'll try to post as many as possible to make up for it depending on who reads this and who doesn't.