Rebirth System: Blood and Ash - Chapter 5: Quest

[You have signed in!][Lucky spin in effect!][You have obtained (Immortal Body)!]---Rion was a teenage boy who, unfortunately, had never seen the world beyond his own.Born with a weak body and a mind too great for it, never allowed a single moment of peace; he always dreamt of the outside world, of the great nature.His doctor had told him that he would be going out soon... but he didn't think he meant he would be outside like this.Rion had died that day, only to be reincarnated in a tribe of Warriors. But this time his life would be different as he was accompanied by his cheats. Rion had decided to live a simple life—[Ding!][You have signed in at The Spring of Youth!][You have obtained the passive skill (Minor Heal)!][Ding!][Lucky Spin is in effect!][Congratulations! You have obtained 100x reward!][You have obtained the passive skill (Immortal Body)!]—Until he obtained Immortality.He had never cared about the rewards he obtained from his sign-in system and lucky spin; he was happy with anything—everything, but... Now he could travel the world without fearing what he feared the most—death. He had gained Immortality, after all.____Stakes would be low. Mostly Slice of Life with tidbits of action and drama.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

A world where God will grant abilities called Skills to those who come of age. The protagonist, bestowed with two skills, uses them and rises to an existence called a hero.

He transmigrated into the dangerous world of Naruto and became a member of the Uchiha clan in Konoha.Fortunately, the night of the clan’s massacre is still years away—and he possesses an extraordinary talent, unrivaled in the village!