17-sai Kara Yarinaosu Propose Manga Summary *“I wish I had liked you when I was a high school student …”*
Osamu’s girlfriend refused his proposal with these mysterious words. After that, in an accident, he time-leaps back to his high school days.
He was trying to find her and make her fall in love with him again, but when he met her she had a twin sister…! ??
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