So in this hentai/doujin there is a girl who is considered “cool” and “scary” by her classmates but shes actually really cute and is just acting cool because she doesnt want ppl to find out her childish hobby (collecting teddy bears/plushies). The male character’s hobby is sewing plushie. After running into her at a plushie shop and finding out the truth he go to her home and and he (accidentally) fell on her and after that they had sex. Thats all i can remember.