Shadow's Oath - Chapter 45

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world.

Reborn as Red Army Misha!

- Description from novelbuddy

“Gu Hangshen! Your sister stole my man, and you helped her do it! Your whole family is rotten!”“Whatever my sister owes you, I'll compensate you.”“And what will you compensate me with?”“Me.”“...”Later, he not only gave himself up as compensation, but he also came with a clingy little bundle of joy...

The story about a family's struggle to ensure that, above all else, their youngest escapes from the mines where he was born into slavery. Follow Alistar as he struggles through terror and tragedy, embarking on a road to discover himself and his heritage.