Summary
“I never once thought of you as my older sister.” Haruka, who works as an office worker and has no boyfriend history, finally got a boyfriend! She consults with her younger brother, Aoi, who is not blood related, about her romance with him, but she always gets in the way. One day, Aoi finds out that her boyfriend kissed her for the first time! Then, Aoi’s expression changes to that of a “man” and pushes Haruka down… “I’ll teach you what a man is like.” .
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