I thought the MMC of Nagatoro looked like a cuckold in an NTR doujin, but he looks like a chad compared to this guy, who looks like he would smile while sucking the other man's toes during such a scenario.

I'm like 20 chapters in. Here's the lowdown: MC is a normal guy and FMC is a flirt with MC and ice queen to everyone else. They like each other and it's that "why aren't they dating?" meme every chapter. He's a stereotypical japanese teenager who can't confess despite their romance being reciprocated (just because he's too shy, I guess?). They just do cute shit and circle the drain with their romance ad infinitum. I don't see the connection with Nagatoro (who is way meaner and more teasing than this FL). Here, the girl just puts MC in awkward situations with others by making it seem like they're already together (which they might as well be, given how everyone around them acts and treats them). It's a pretty typical short chapter romance where you can't really tell if there'll ever be a confession or if they're just flirt until the mangaka stops putting out chapters. Translation and proofreading are also pretty spotty; still good though.

I've rarely seen a character who deserves to die for more reasons than traitor power-hungry musclefist

the main character is basically a pathetic coward who hides behind school rules and tattles all the time. he puts on this badass facade despite being a huge weenie most of the time. he's gotten a bit stronger more recently through his harem connections, but overall he is pretty unlikable. it does seem like one of those annoying characters become slowly more likable type stories, though

MC's dad was the most accomplished and connected man in murim, according to all the lies MC tells.