KOORI NO HIME WA CHIISANA HIDAMARI DE TOKASARETAI

The first-year high school boy Aoba diligently helps to take care of his younger siblings while their parents are busy at work. One day, they are invited over to play at the home of Mizutori, the beautiful girl in his class known as the "Ice Princess"…!? (Source: Comic Trail, translated) — Description from AniList community (anilist.co).