MTL - The Return of the Black Technology of Immortal World - v3 Chapter 37 back and forth

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!

Three years ago, in the land of Reinbulk, a Legendary Hero was summoned in the Kindom of Leezalion and he succeeded in repelling the Demon King. Now, five students are summoned back into Reinbulk by the Kingdom of Luxeria to fight against the Demon King and the demon army. Unlike the other heroes, Yashiro Yuu has no magical affinity and the Luxeria Kingdom has no intention on acknowledging his existence or returning him to his world.

The Human Civilization is on the brink of being wiped out. Only the last kingdom remains. Demonic beasts are the cause of this nightmarish situation. They would've annihilated the human race if the Beast Tamers haven't appeared. With their Beast Taming Seals, they can capture and command the Demonic Beasts, turning enemies into allies. They are the guardians of humanity who have forced open a safe haven for humans in a world overrun by demonic beasts.Ray, a law-abiding citizen with three part time jobs, transmigrated into this world after he was killed, finding himself a participant in the Beast Tamer Trial.If he fail, he would have to resume the original owner life and suffer endlessly until his death. If he succeeds, he would become a beast tamer, a privileged member of society.Luckily, the perk of a transmigrator arrived.[You have been bestowed the Strongest Beast Taming System!][You have tamed your first beast, the King of Slimes!][The Skill and EXP Sharing features has been unlocked!][You can use all the skills of your tamed beasts.][Everytime your tamed beasts kill a creature, you will gain EXP to level up.]While others were struggling to find ways to evolve their tamed beasts, Ray levelled up like crazy.

Tu Xiao'an dies due to an accident and he is luckily reborn as a snake with a system. As long as he gobbles down some preys, he could speed up his course of evolution and gain more power to protect his family.'Mom, Sis, I'm sorry. I'm so, so sorry for making you grieve!''One day, I'll stand before you again, out in the open, and take care of you!'