Beast Taming? My Bro Dog Can Only Shout, “My Sword and Shield!”

Pokemon-like + Urban + Parallel World + Lie Flat + Daily Life + No Heroine + Comedy + Delusions of Grandeur (There will be some Pokemon, as well as original creatures. This setting is mainly here to let me mix things together, so feel free to suggest ideas and I'll consider adding them. All the dungeon arcs are guaranteed to feature original creatures, not the Pokemon setting.)

Standing before you now is

League World Championship gold medalist, Master-level Beast Tamer, professional latecomer to fluid mechanics class, a man who puts his clothes on inside out, a hapless owner constantly betrayed by his contracted beasts, and the beloved “Teacher Lu” in everyone's online comments.

My name is Wenren Yu. I transmigrated to a parallel world similar to the Pokemon world. My username is “86-Year-Old Man Climbing the Wall to Get Home,” and I have no idea why everyone online likes to call me “Teacher Lu.”

Thinking back to my first day after transmigrating, I looked at that fat dog that could only shout, “My sword and shield,” and sighed:

“I never wanted to be a Beast Tamer!”

“I just want to lie flat, retire, and walk the dog in the sun every day.”

“And as for becoming champion? Only a dog would do that!”