I watched this アニメ and I forgot its name

I watched this アニメ a few years 前 now I forgot its name and I only watched 2 eps of it. The male lead has a younger brother and they have brown hair i guess. In the first ep the male and the female leads will meet in the forest because the male lead's brother's hat gets stolen によって a monkey. And the house owner would accidentaly see him naked because he forgot to lock the door. the female lead falls on 上, ページのトップへ of him and they would accidently キッス and a few days later the male lead saw the female lead eating a flavoured 食 and remembers that the tastes like the flavour (from the kiss) please help. Its also a highschool anime