Koutaro Kudo was known as the "Streets' Strongest". Once, 13 thugs, thirsty for revenge, kidnapped his younger sister Hinami. Kotaro beat everyone, and on the same night, he was arrested on suspicion of murder, as each of them was later found dead. He is then forcefully enrolled to a certain school, in which all students must meet "a special criteria" to enter... 5r276p
5 Volumes (Complete)

Generic battle royal fortnite.
Mc has only his siter in life
Sis is kidnapped and about to be raped, mc beats the shit out of 13 dudes but does not kill them and leaves with his sister.
At home, police knock on door and arrest mc for suspicion in killing the 13 rapists.
Mc is tried and found guily and put into an island with other murderers.
Homosexual buff murder about to kill mc, but mc does a judo throw, which throws gay onto black board.
Teacher enters and tells people to sit down, gay no listen and tries to fight mc, teacher slits throat.
cue generic shit
Teacher says they can do whatever he want because there are no morales,
Teach gives kids items (mc is given paper fan) and says that they need to kill people in classroom until 12 remain,
People die
12 remain.
Teacher praises killer who killed 3 people, and shits on mc for not killing people along with 2 otber people who did not kill
Baiscally a revenge story, only thing that mc has for motivation is his sister.
I also hate how in every manga, its always an innocent guy who goes to jail, like u would think the police and detectives would do their due dilligence and shit.
I also predict the innocent character in the prsion island will be the most fucked up, or yandere, or some troupe like that.
While this is my review on the 5 chapters, take a grain of salt, i need more teanslations to make a proper judgement