Similar manga

badass protag
> dear boy
http://www.mangago.zone/read-manga/dear_boy/
> study group
http://www.mangago.zone/read-manga/study_group/
> the world is money and power
http://www.mangago.zone/read-manga/the_world_is_money_and_power/
> ouroboros
http://www.mangago.zone/read-manga/ouroboros/
> boxer
Read on webtoons to support the author legally and for free
> weak hero
Read on webtoons
> black haze
http://www.mangago.zone/read-manga/black_haze/
> second life ranker
http://www.mangago.zone/read-manga/ranker_who_lives_a_second_time/?4FiU
> second coming of gluttony
http://www.mangago.zone/read-manga/the_second_coming_of_gluttony/?5KcF
> beginning after the end
http://www.mangago.zone/read-manga/the_beginning_after_the_end/
> the skeleton soldier: failed to defend the dungeon
http://www.mangago.zone/read-manga/skeleton_soldier_skeleton_soldier_couldn_t_protect_the_dungeon/?PCGM

Thank you but I’ve already read most of them, i will try Boxer, and skeleton soldiers.(⌒▽⌒)

thats unfortunate, well... hope you enjoy them nonetheless (⌒▽⌒)
you can also try these:
> Imawa no Kuni no Alice (smol smol smol romance, but not annoying)
http://www.mangago.zone/read-manga/imawa_no_kuni_no_alice/
> Btooom! (has romance tho)
http://www.mangago.zone/read-manga/btooom/?VDO2
> Tokyo Revengers (not focused on romance, there is but I love the FL), favourite shounen manga, slightly ahead of BlueLock
http://www.mangago.zone/read-manga/tokyo_revengers/?2jHI

Thank you

Badass/intelligent protagonists :

- http://www.mangago.zone/read-manga/rebirth_69michi/ (there are more chapters in Webtoon app and it's free)
- http://www.mangago.zone/read-manga/tower_of_god/?t4uQ (protag is not badass at first, but after he becomes really badas)
- http://www.mangago.zone/read-manga/ranker_who_lives_a_second_time/
- http://www.mangago.zone/read-manga/the_beginning_after_the_end/?av=1
- http://www.mangago.zone/read-manga/dokgo/
- http://www.mangago.zone/read-manga/medical_return

hi! some revenge maybe?
http://www.mangago.zone/home/mangalist/846297/
http://www.mangago.zone/read-manga/from_the_red_fog/
http://www.mangago.zone/read-manga/brutal_satsujin_kansatsukan_no_kokuhaku/
http://www.mangago.zone/read-manga/the_hero_who_seeks_revenge_shall_exterminate_with_darkness/
http://www.mangago.zone/read-manga/ranker_who_lives_a_second_time/
http://www.mangago.zone/read-manga/nidome_no_yuusha/
http://www.mangago.zone/read-manga/prison_lab/
http://www.mangago.zone/read-manga/rooftop_sword_master/
http://www.mangago.zone/read-manga/the_villainess_reverses_the_hourglass/
http://www.mangago.zone/read-manga/shadow_queen/
http://www.mangago.zone/read-manga/legend_of_the_northern_blade/
http://www.mangago.zone/read-manga/resurrection_of_the_catastrophic_hero/
http://www.mangago.zone/read-manga/juujika_no_rokunin/
http://www.mangago.zone/read-manga/the_villainess_lives_twice/?oWwp
http://www.mangago.zone/read-manga/the_holy_grail_of_eris/
http://www.mangago.zone/read-manga/i_want_to_be_you_just_for_a_day/
http://www.mangago.zone/read-manga/skip_beat/
http://www.mangago.zone/read-manga/beware_of_the_villainess/
http://www.mangago.zone/read-manga/the_villainess_slow_prison_life_began_with_her_broken_engagement/
http://www.mangago.zone/read-manga/bastard_hwang_youngchan/?WNwI
http://www.mangago.zone/read-manga/the_breaker/?cbmf
http://www.mangago.zone/read-manga/ajin/
and adventure stuffs:
http://www.mangago.zone/home/mangalist/846256/