ねねちゃんとお姉ちゃん

Tamako Kurokawa, a high school girl, and her two-year-old sister Nene are left alone after their parents die in a car accident. A mysterious young man named Aoi suddenly appears at their home, claiming he’s there to care for them. Tamako is wary of Aoi’s odd demeanor but grows accustomed to his presence as he helps with Nene’s care and household tasks. Their unconventional household dynamic unfolds with warmth, as Aoi’s quirks and kindness bring moments of connection. The trio’s daily life blends humor and quiet emotion, navigating the challenges of their new reality. (Unreviewed summary by Grok 3)