Open the Door into You

Hinako lives with her grandfather and her brother. Hinako secretly adores her brother's best friend Akiho. Suddenly her brother dies in a traffic accident, and Hinako thinks it is Akiho's fault. Volume 1 of Hard of Nacchan's Heart Time series. Volume 1: [Doa wo Akete Kimi no Naka e](https://www.mangaupdates.com/series.html?id=16932) Volume 2: [Ai no Kotoba (HAMAGUCHI Natsuko)](https://www.mangaupdates.com/series.html?id=16930) Volume 3: [Kimi no Koe na Kikinagara](https://www.mangaupdates.com/series.html?id=16931)