Toesasikyeojuseyo

Guard Kang Yu-Jin with immeasurable abilities pretends to be a zero with no abilities and manufactures guard drugs at a pharmaceutical company. He tries to live a normal, quiet life as an office worker... but he is in danger of being exposed as a guard due to the sudden appearance of the pretty crazy S-class psychic Daniel Miller.

Please... let me fire him!

(Source: Lezhin, translated)