WAKAOKAMI WA SHOUGAKUSEI!

The "story of laughter and tears" centers around "Okko," a sixth-grade elementary school girl who lost her parents in a traffic accident. She moves to her grandmother's hot spring inn "Haru no Ya" (Spring House) and trains to run the inn. She gradually grows up with the help of the ghost "Uri-bou" and other mysterious friends. (Source: Anime News Network) — Description from AniList community (anilist.co).