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English translation of the Japanese manga Bokura ga Ita (僕等がいた).
Nanami Takahashi falls for Motoharu Yano, the most popular, carefree boy in class. For Nanami, it's first love, but Yano is still grieving the death of his girlfriend who died the year before.
Nanami starts high school with high hopes of making lots of friends. She develops a crush on the enigmatic Yano, but he may have too many secrets for her to handle.
At that time...
...I didn't fully understand what Yano meant.