After School Labyrinth Adventurer ~ I’m now able to go back and forth between Japan and another world, and I’ll work hard to level up~

A brief description of the manga After School Labyrinth Adventurer ~ I’m now able to go back and forth between Japan and another world, and I’ll work hard to level up~
Akira Kudo, a high school student who can freely travel back and forth between Japan and another world, Do Merta. With no goals in mind, he spends his time after school enjoying life in another world as he is!
As an adventurer, he gets teased by the guild’s receptionist, receives “rewards” from his magic master, and has fun with the girl he helped…!?
“I hate pain! I don’t care about ranking up! Guild requests are also troublesome!”
A leisurely labyrinth exploration fantasy just for after school!