Chapter... Wait what this piece of crap has 7.20?!

Warning might contain spoilers...maybe not since this story is made to make fun of a reader as no brain gorilla

Story:4

Well eXcUsE me while concept of the story was ok-ish, story progression and dynamic was completely off also how author realized this story is awful not to mention it is full of plot holes and incoherent story plots (as if author forgot previously stated story points).
We start abruptly we learn basically nothing about main story aspects, like why did MC change from middle school, why is his sister a monster, where are their parents and a lot more questions and incoherence (MC is super strong and everyone is afraid bam girl is afraid of him bam next chapter she constantly kicks his but)
Or next one we have few chapters story progression and then last chapters story progression, chapters in between are simply to bore you to death with cliche jokes that go like that : rinse and repeat, rinse and repeat, repeat and rinse. I'm amazed how people can rate this piece of garbage above 5. Mystery's unsolved, plot holes right and left abrupt but decent ending (Author kudos at least for making a decent ending). This whole story is based on one big misunderstanding and completely unfounded rumors.
I know some story's throw you in the midst of a story but they at least try to explain ridiculous thing that are happening, here you have 0 mystary's solved besides one (early in chapters you learn MC was an ok guy). The more I question the less this story holds up 4 is only because he at least could follow through the ending else he would receive 2 no more.

Art:8
Well art on the other hand was a pleasant surprise it was likeable, characters were more or less unique (not very attractive but more or less good and unique). Background wasn't so memorable but didn't stand out as bad and was good. Panel placement while not the best was indeed good and readable, dialogue bubbles are the same.

Characters:4
One dimensional people everywhere, they have a set character traits and vocabulary + joke amount. Famous joke "HaHaHa Siscon" "No, I'm not". Only characters that has something is MC's sister (she has split personality tsundure and open cry baby).
MC is kinda a mystery, 2-3 years ago he was a straight A smart student, decent looks and great physique and then everything changed, you ask why and when? Sorry no answer author forgot, he was too high. Now he is a delinquent who on purpose barely passes tests and acts arrogantly and intimidatingly reason being to safe guard his sister (not to mention his previous life is none existent he was excellent before but nobody remembers him from middle school besides one person (it seems even his sister doesn't know who he was).
Sister that is something like a sociopath with amnesia and a secret brother complex but she twists everything around and now MC is an a hole and a Siscon(He isn't). That one girl is an epitome of evil in MC's life if not for her his life would be fantastic but for some reasons s*$t happened and now you see this dysfunctional manga.
Girl who beats the living hell of MC - apparently is a major muscle brain and has a moment of clarity at the end of the series when she understand that she simply f*&(d up everything hence being a muscle brain who can't analyze sh*t.
MC's love interest emm she was incoherent, she could follow up a lot of things about MC but she still thought of him as a siscon and below average intelligence person.
Big Sister character yet another dysfunctional persona who is from one point kinda smartish but is either bullying or simply doesn't care. And by that i mean play along in this random story.
And Antagonist-kun, placed simply to show some competition for a few chapters and disappeared with a small mention later. You know like he was there only to mix up something since before him we had only MOB male roles.

Enjoyment:2

Above stated points show my enjoyment it's almost none existent, it felt like author was using my head as toilet for his major case of diarrhea...... I sat and read it all and I simply felt like my brain was nearing a danger zone (caution few more chapters and zombie brain will be imminent). I enjoyed few chapters 1-5 and 36 that's all. Jokes are repetitive "SISCON" "Delinquent" kicking and convenient ribbon loss.

Overall:4

I feel 4 is too much for this, work is unfinished, nothing answered, characters are dumb or have a major case bullying fetish (where everybody agreed to isolate one kid). It's hard to mark it as shounen (set in high school) it was more like shounen (set up in primary school (grade 4) where everybody plays a role diligently).

THAT'S ALL I CAN MUSTER TO SAY ABOUT THIS MAJOR CRASH-LANDING ACCIDENT OF MANGA.