The most compelling evidence comes directly from the fan community. A thorough review of the series on MyAnimeList demonstrates the clear preference for the animated adaptation. The manga holds a solid score of , but the reviewer explicitly gave the anime a much higher score, 9.5 out of 10. This gap in ratings is the first indication of the power of the medium change.
A standard paper on this series typically focuses on one of three areas: 1. Adaptation Differences (Manga vs. OVA) aneki my sweet elder sister the animation better