Responses
I wouldn't say he's a TRUE assassin. He's a necromancer first with an assassin subclass; he's honestly (personal opinion) only using it for physical combat. He unlocked his abilities in the second world, first using them to survive, not assassinate really, but the lack of combat awareness is troubling me. Like, what do you mean you were the best player in the second world and get surprised by such trivial matters?
The story is promising but the MC is lacking in a number of particular areas. Isn't he an assassin so why does he get flustered on the simplest things? Is he not aware of the saying "not to wear your heart on your sleeves?"
It fits the bill for assassins who do not show their true faces to anyone to avoid leaking their weakness.
Speaking of emotions and facial expressions, some of the chapters particularly around 26 to 28 are just way comical. The lip bites and flustered faces seemed to look like they're horny about something rather than flustered or surprised. It doesn't match the scene at times.