My Unique Skill Makes Me OP Even at Level 1 novel volume 1 was written by Nazuna Miki with illustrations by Subachi.

Ryota Sato gets the surprise of his life when he's suddenly transported into another world and nearly clobbered at the hands of the young, pretty adventurer Emily Brown. This new world revolves around defeating monsters and profiting off whatever they drop—food, money, items, and more. Unfortunately for Ryota, he has no skills to speak of...until he learns he has otherworldly drop luck that brings him never-before-seen items! Suddenly his luck turns around...or does it?

My Unique Skill Makes Me OP Even at Level 1 novel volume 2 was written by Nazuna Miki with illustrations by Subachi.

After finding himself transported to a world where everything drops from monsters in dungeons, Ryota Sato learns that he has one unique skill: though he’s stuck at level 1, all of his drop stats are S-rank! He uses that skill to the fullest, collecting drops and growing stronger with each passing day.

One day, Tellurium’s dungeon chief summons Ryota to help with a rights dispute regarding a new dungeon on the border of the city. Sensing his chance to put his S-rank drop stats to a true test, he sets out on a new adventure with loads of surprises in store!

My Unique Skill Makes Me OP Even at Level 1 novel volume 3 was written by Nazuna Miki with illustrations by Subachi.

Ryota Sato finds himself transported to a world where everything drops from monsters in dungeons. Despite being stuck at level 1, he uses his unique S-rank drops to farm dungeon monsters and make money alongside his friends: Celeste the mage, Eve the strange bunny, and Alice the monster tamer.

But everything changes when all of the item drops in Cyclo stop. Faced with a town that has no way of getting drops out of dungeons, Ryota is asked to investigate the root cause of the issue...and what he discovers is truly shocking!