I’m Really Not The Demon God’s Lackey - Chapter 10 You Failed?

A wonder falling down from heaven! A boy possessed by strange blood! Gods tremble! Demons flee! A boy from the land of Dong Zhou. A pink skull as his sworn friend until death. A story of a determined warrior struggling for power. A legend that shakes the galaxy and disturbs the worlds of god, demon and man.

- Description from Novelupdates

In a world teeming with Titans, Colossals, Gigantic Monsters and Kaiju's, Erian who reincarnated makes his living collecting scraps of low-grade Defective Genetic Serum, realised he transmigrated along with his system.

Follow Erian as he grows to become the strongest Disaster Grade Titan with the help of his Titan System!

Light and darkness are twins, blessings and curses coexist.Oh girl who stands upon the stage of destiny,May your path ahead be filled with blessings.------------Anko Probabilistic Narrative Writings：It's like telling stories by rolling dice. Just as many games offer various action and dialogue options that lead to different branching storylines, this book creates characters, advances the plot and builds the world view by providing a large number of different branches and using dice rolls to determine the outcome.