[Light novel] Until I defeated the metal slime until it is called [King of Black Steel] (2 books)

Publisher: KADOKAWA/Fujimi Shobo
Author: Onsen Capybara, Sansho Fish
Size: 105mm x 148mm
Number of books: 2
Language: Japanese
Category: Light novel
Latest release date: 2023-09-20

Synopsis:
If you get rid of the intense rare slime that springs in the garden for some reason, without knowing it!?

[Kakuyom 《Contemporary Fantasy》 The first place in the annual ranking]

One day, a large hole opened in the garden of the house. There was a mysterious slime that trembled with a metallic body.
For some reason, Yuma Mitaka, a dull high school student, will spend the day to get rid of the "metal slime" that springs in the hole every morning ...
As I repeated such a day, Yuma's body had evolved astonishingly !!
"But this ability ... it's a bad guy if someone gets lost ..."
If you activate the non -standard force you have obtained, it will look like a "monster", so its ability is absolutely secret.
However, it is also a matter of time that Yuma's existence is too unique to shake the world-!?
Unprecedented warriors fantasy starting with common everyday!