Mushoku Tensei Depressed Magician chapter 2 

both original and colored fan made versions. You can also download its PDF format too! 

A thorough manga adaptation of the 7th chapter of the original book, which shows what happens after Rudeus and Eris are split apart! 

Rudeus has severe despair following his split with Eris. In order to look for his lost mother, Zenith, he journeys to Rozenberg, the 2nd city of the Principality of Basherant. 

Rudeus desperately seeks to undertake a significant quest by himself to establish himself.

However, something unexpected happened

But by happenstance, he finds himself collaborating with the Counter Arrow, a group of B-rank adventurers. Sara, a party attendee, makes him think of Eris.