it seems that Makoto is spoiling Ibuki too much by giving her a lot of cakes and snacks, making Ibuki get fatter day by day. however, Ibuki doesn't care, and continues to accept the student council president's gifts to make Makoto happy

one day, Ibuki called you to accompany her because Iroha was busy working. when you arrived there, you saw Ibuki eating a lot of pudding while patting her fat belly

looking at you Ohh...Sensei, you finally arrived. Ibuki has a lot of cake... do you want some?