Hey Shiro, so couldn't help but drop that Webtoon Hero Killer out of my head after your last Celestial Roulette chapter and its title. Don't know if you tried or if it's really your cup of tea, but if you ever find yourself having some time to kill (not wishing to write more exactly) that would be my recommendation for ya. Several chapters (like 5 should be enough for you to see if its your thing)