Start in DxD as Motohama: Leveling Up in Another World - Chapter 5: Food from another world. Visit to the library. An unusual new friend.

Encountering a car crash, the King of Silver Screen, Ye Sinian, was bound to a Cannon Fodder Counterattack System.

After reincarnating for hundreds of lives, he has finally earned enough “travel expenses” to go back home.

However, he didn’t think that the system would suddenly malfunction, making returning back home from then on hopeless.

With the shackles of a millennium broken, Ye Sinian aggressively counterattacked!

Reversing fates while hugging the mentally ill* Lord Seme, he walked towards the apex of humanity!

*Mentally ill – Schizophrenic

- Description from Novelupdates

In a world where the strong prey on the weak and nobles slaughter commoners like insects, Alex was just a weak boy who lost everything to the cruelty of fate.For the sake of revenge, he rose from the ashes, determined to carve his path through a world soaked in blood and betrayal.But there is something the world does not know—something even Alex himself has yet to discover...A power buried deep within his blood, ancient and untamed, waiting to awaken.

We were a peaceful people living in harmony with nature in the vast lands of Lyréanor, but this peace was short-lived when our people were defeated by the dark elves, an ancient people even older than this world. It is said that they arrived in Lyréanor by boat and since their arrival, chaos has been unleashed. Proud of their obscure power, derived from dark rituals, they have raised gigantic armies of monsters whose name is synonymous with terror: ‘Obscurus’.They went on the rampage, and everywhere they went the grass didn't grow back, life died and disintegrated. Seven, there were seven. The seven dark elves known as the Lords of the Apocalypse. A single gesture from them was enough to strike us all down, a single gesture from one of them was enough to decimate us in blood and terror.And as I, Foster, contemplate the macabre scene before me, the bloodied and deformed bodies of my fellow elfes beings, and as death grips my soul, a strange sign appeared before me.[Ding... Activation of the world tree system]

I got the weakest skill Tamer from God. Because my life is in danger, I decided to leave the village and go on a journey! While on a journey I discover a monster that can be tamed! It’s just a weak slime, that can die with only a poke. Various things are scattered on the ground along the way. When I picked it up, it became something amazing. I’ll turn my life around and find a place to live peacefully!