Manga (black n white) Isekai~ (no manhwa)

A god was suddenly prostrating in front of Kayano Takumi. He was apparently killed by a mistake. Moreover, he can't be reborn again. However, according to god, he would be able to live in a different world, but he made a mistake again and transferred him into a dangerous forest... where he finds a pair of children and decides to take care of them.
This is so adorable wtf.

Welcome to the academy of Demons and Dungeons!

Absolute favorite of all time 5/5
When Ivy was born into this world, she remembered her past life.
Remembering her reincarnation, she strove to avoid strife.
But fate curdled at the status check, when kids learn who they are.
For she had only one skill - Taming - and not a single star.
Ivy was weak from the start - at most, she could tame a slime.
Her parents hated her for it (apparently, being weak is a crime?)

The MC was reincarnated to a noble family after being hit by a truck. On his 10th birthday it was found out that he didn't have any skill so he was kicked out of the house.

Ryouma Takuma, a 39-year-old man with a hidden past, finds himself in a strange white room. The gods tell him that he has died and they are sending his soul to a different world, a world where magic exists. Living alone for 3 years, his gamer soul loses common sense and starts heading toward crazy routes.

Sano Yuji, a black company employee, is summoned to another world while finishing his work at home. His profession in the other world, a Monster Tamer, is considered a job that makes it difficult to become an adventurer. However, thanks to some slimes he met, which read several magical books, he gained magical powers and the second profession, Sage.
Yuji acquired overwhelming power, but is he conscience of his strength? Blindly becoming unparalleled and strongest in the world!

Hiel was ridiculed for having a weak crest and sent away to a remote island. When he grabbed an ice axe to somehow reclaim this island, the true effect of his crest was revealed. With his production cheat he will reclaim this uninhabited island and start his life in paradise.