Level 1 Dakedo Unique Skill de Saikyou Desu (Novel)

From Kodansha: Overworked Ryota Sato has been transported to another world. No matter how hard he tries, he’s stuck at level 1 but in return, he has otherworldly luck when it comes to item drops. Despite his low level, a few stat-boosting item drops have his stats maxed in no time. Throw his special equipment into the mix, and he’ll be the strongest - even at level 1.