A Survival Guide for a Counselor in the Apocalypse Chapter 186

Tl note; 

Nameless boy — 男, 無名.

“Mu” for flourishing, “Yeong” for eternal — 茂永.

And another meaning: “No” and “welcome.” — 無迎

They all have almost the same pronunciation, just with slight differences. He was basically first named “nameless boy” (what kind of evil person even does that?), then later changed into “eternally flourishing.” But in the end, he still sees himself as someone who was “never welcomed.”