Anything gore like starving anonymous? Or like the manga brutal?
HORROR // PSYCHOLOGICAL
> Brutal: Satsujin Kansatsukan no Kokuhaku
http://www.mangago.zone/read-manga/brutal_satsujin_kansatsukan_no_kokuhaku/
> Pumpkin Night
http://www.mangago.zone/read-manga/pumpkin_night/
> Kichikujima
http://www.mangago.zone/read-manga/kichikujima/
> Prison Lab
http://www.mangago.zone/read-manga/prison_lab/
> Tomogui Kyoushitsu
http://www.mangago.zone/read-manga/tomogui_kyoushitsu/
> Fukushuu Kyoushitsu
http://www.mangago.zone/read-manga/fukushuu_kyoushitsu/
> feeding lamb
http://www.mangago.zone/read-manga/feeding_lamb/
> Kami-sama, Ki-sama O Koroshitai.
http://www.mangago.zone/read-manga/kami_sama_ki_sama_o_koroshitai/?83z4
> Jinrou Game
http://www.mangago.zone/read-manga/jinrou_game/
> Jinrou Game - Beast Side
http://www.mangago.zone/read-manga/jinrou_game_beast_side/
> Jinrou Game: Crazy Fox
http://www.mangago.zone/read-manga/jinrou_game_crazy_fox/
> Funouhan
http://www.mangago.zone/read-manga/funouhan/
> Tenkuu Shinpan
http://www.mangago.zone/read-manga/tenkuu_shinpan/
> MADK
http://www.mangago.zone/read-manga/madk/
> Homunculus
http://www.mangago.zone/read-manga/homunculus/
> U12 (Under 12)
http://www.mangago.zone/read-manga/u12_under_12/
> Apocalypse no toride
http://www.mangago.zone/read-manga/apocalypse_no_toride/
> Save me
http://www.mangago.zone/read-manga/save_me/?yZNC
> Uncomfortable Truth
http://www.mangago.zone/read-manga/an_uncomfortable_truth/?F8kz
> PigPen
http://www.mangago.zone/read-manga/pigpen/
> miss guillotine
http://www.mangago.zone/read-manga/miss_guillotine/?YJEb
> Sweet Home
http://www.mangago.zone/read-manga/sweet_home/
> Bastard
http://www.mangago.zone/read-manga/bastard_hwang_youngchan/?MMYm
HOPE THIS HELPED
ANYTHING CUTE YKYK
https://www.mangago.zone/read-manga/asatte_ni_kiss/
LITERALLY ANYTHING BY THIS AUTHOR
My favourite shounen-ai webtoons
https://www.mangago.zone/home/mangalist/948969/
I think you'll might find something interesting to read
Honestly anything similar to it basically enemies to lovers
First page especially: http://www.mangago.zone/home/mangalist/1002089/
I wanna read something that has a lot of mental issues and real world struggles but also insanely seinen
Most of the following may not be very seinen or fit what you're looking for at all, but I'll put it here just in case..
I dunno if it was well handled but "bungou stray dogs"
oyasumi punpun (classic)
lookism
happy sugar life
Bokutachi ga Yarimashita
Jagaaaaaan
vinland saga (no but this is beautiful)