Binetsu Kuukan

Chapter 14.5
Chapter 14
Vol.3 Chapter 14.6
Chapter 14
Vol.3 Chapter 14.6
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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