生活魔法使いの下剋上

I'm not "useless!" I'll prove it by conquering dungeons! One day, magical dungeons suddenly appear in modern Japan, and daily life is completely transofrmed. Gurimu Sakaki was born with a talent for life magic that seems useless for exploring dungeons or defeating monsters. But while exploring a dungeon, he finds a rare item, the "Sage System," which allows me to create new kinds magic…? (Source: Kadokawa, translated)