Manga like Onecha.

Ranked by AniList's community-voted "readers also liked" data and how often forum discussions mention a title alongside Onecha..

1. Iljinnyeo Gildeurigi 2 community votes
2. Jigoku ni Ochite yo, Onii-chan 52 1 community votes

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Tsundoku reads the actual forum threads and your own AniList history before it recommends anything — every answer shows its sources.