Binetsu Kuukan

Vol.2 Chapter 11.5
Vol.2 Chapter 11
Chapter 12
Vol.2 Chapter 11
Chapter 12
Akasegawa Naoya's mother remarried recently and he suddenly finds himself trying to get along with his new big sister Amane, a student of the prestigious Kasugano Girls' School. But his new big sister isn't like what you might first expect.
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