Mangas and Manhwas where MC gains a group of friends/Companions
Manga
MC must gain at least 3 friends/Companions that do not become love interests
Troupes:
Loner/traumatized MC grows to appreciate friendship and opens up to others.
Or
MC leaves home or their typical setting and makes friends(Like One piece or most Shonen)
Keywords: Friendship, Loner, Bromance, Girl-friendships
All genre's
Troupes:
Loner/traumatized MC grows to appreciate friendship and opens up to others.
Or
MC leaves home or their typical setting and makes friends(Like One piece or most Shonen)
Keywords: Friendship, Loner, Bromance, Girl-friendships
All genre's
Re:Zero kara Hajimeru Isekai Seikatsu
Re:ZERO -Starting Life in Another World-

Light Novel, ? vol, 2014
Me:-
Author:9
Traumatized MC learns to open up to others. (I only read the WN/LN and not manga.)

Manhwa, ? vol, 2020
Me:-
Author:9
Traumatized MC learns to open up to others. Great chemistry with the entire cast.

Manga, ? vol, 1997
Me:-
Author:10
Joyful and dense protagonist who is always up for making friends. Great chemistry with the entire cast.

Manga, 77 vol, 2003
Me:-
Author:10
MC grows to form deep bonds with his two 'employees'. Great chemistry with the entire cast.

Manga, 26 vol, 2012
Me:-
Author:9
Apathetic MC attracts friends wherever he goes, much to his disappointment.
Yamada-kun to 7-nin no Majo
Yamada-kun and the Seven Witches

Manga, 28 vol, 2012
Me:-
Author:7
Loner delinquent MC makes friends he grows to really appreicate and gets a girlfriend.

Manhwa, ? vol, 2020
Me:-
Author:7
Apathetic but softhearted protag attracts friends everywhere he goes, he appreciates it but won't show it.

Manhwa, ? vol, 2010
Me:-
Author:9
Lonely MC years for companionship and gains many friends who are fond of his sincerity.

Manhwa, ? vol, 2019
Me:-
Author:7
Intelligent and overworked MC takes in a 'student' and learns to reevaluate his own beliefs.

Manhwa, ? vol, 2018
Me:-
Author:7
Loner cinnamon roll MC gains friends who are fond of his deep kindness and non judgmental personality.

Manhwa, ? vol, 2011
Me:-
Author:6
Dumb fun MC makes friends casually, but develops deep bonds along the way.

Manhwa, ? vol, 2010
Me:-
Author:10
Naive and kind MC is left alone after a tragedy occurs and ventures on a journey to seek her revenge. This is kind of a sad story.

Manga, ? vol, 2018
Me:-
Author:9
Average MC enters a Soccer boot camp of sorts and makes friends and enemies. Note that every character can become an enemy or a friend due to the nature of the game.
Mairimashita! Iruma-kun
Welcome to Demon School! Iruma-kun

Manga, ? vol, 2017
Me:-
Author:8
Overly pessimistic optimist MC learns to love himself through the friends he gains.
Tokyo卍Revengers
Tokyo Revengers

Manga, 31 vol, 2017
Me:-
Author:6
Lonely MC goes back in time to save girlfriend and makes friends along the way

Manhwa, 12 vol, 2017
Me:-
Author:9
Suicidal MC finds value in living after forming connections in an apocalypse.

Manhwa, ? vol, 2020
Me:-
Author:7
Teenage Killer MC is made to live as a normal teenager and forms bonds with many.
Katekyo Hitman Reborn!
Reborn!

Manga, 42 vol, 2004
Me:-
Author:7
Clumsy and Low self-esteemed MC suddenly inherits a mafia group and gains friends/subordinates/fanboys.

Manga, 74 vol, 2001
Me:-
Author:8
Hot headed MC enters the word of The Shinigami. gains friends, rivals, and enemies.
Mashle
Mashle: Magic and Muscles

Manga, ? vol, 2020
Me:-
Author:8
Dumb af MC turns his enemies and rivals into friends with pure strength.
Yozakura-san Chi no Daisakusen
Mission: Yozakura Family

Manga, ? vol, 2019
Me:-
Author:7
Anti-social MC 'marries' a girl and becomes a part of the family.
Fumetsu no Anata e
To Your Eternity

Manga, ? vol, 2016
Me:-
Author:9
Non-human immortal MC learns the value of humans relationships and life.

Manhwa, ? vol, 2020
Me:-
Author:7
Loser MC goes back in time(in a crazy way) to become OP and helps those who are suffering along his journey.
Ansatsu Kyoushitsu
Assassination Classroom

Manga, 21 vol, 2012
Me:-
Author:8
Bullied MC joins a loser class and forms bonds through the memories made.
Kimetsu no Yaiba
Demon Slayer: Kimetsu no Yaiba

Manga, 23 vol, 2016
Me:-
Author:7
Friendly and cheerful MC with a trauma and

Manhwa, ? vol, 2021
Me:-
Author:8
MC who is hated by all her female classmates, must work with them to survive.

Manhwa, ? vol, 2022
Me:-
Author:-
Calculating MC is forced to become an idol and develops bonds with his group members.

Manga, ? vol, 1989
Me:-
Author:-
The epitome of traumatized, broken, loveless, loner MC... learning to love.

Manhwa, ? vol, 2014
Me:-
Author:7
Fat and bullied MC gets a 'glow-up' which makes him handsome, and people flock towards him. Eventually, he develops deep bonds with some of them.

Manhwa, ? vol, 2018
Me:-
Author:7
Loner MC who lost faith in friendship learns to value it again.

Manga, ? vol, 2021
Me:-
Author:-
The only exception to the 'do not become love interest' rule.

Manhwa, ? vol, 2018
Me:-
Author:10
Guarded MCs Learning to love while also being terrible at it. Not BL