From manga.club:

"Things I wanted to re-do seem to be endless..." An elite Office Lady, Komori, has a unique ability to do minimum time looping but the limit suddenly turn into 10 years when she got in an accident. The one who greets her in the high-school-past was that man, who had live in Komori's heart for a long time... sometimes remembered as a smiling nerd, sometimes as a lifeless body that Komori couldn't save.

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