Maybe these
http://www.mangago.zone/read-manga/i_m_still_alive/
http://www.mangago.zone/read-manga/my_father_68y_o_my_mother_64y_o_me_24y_o/
http://www.mangago.zone/read-manga/boy_s_abyss/
http://www.mangago.zone/read-manga/neeko_wa_tsurai_yo/
http://www.mangago.zone/read-manga/she_doesn_t_know_why_she_lives/
http://www.mangago.zone/read-manga/please_forgive_me/
http://www.mangago.zone/read-manga/haru_no_noroi/
http://www.mangago.zone/read-manga/deep_love_ayu_no_monogatari/
http://www.mangago.zone/read-manga/yuuutsu_kun_to_succubus_san/
http://www.mangago.zone/read-manga/three_days_of_happiness/
http://www.mangago.zone/read-manga/azure_and_claude/
http://www.mangago.zone/read-manga/cat_street/
http://www.mangago.zone/read-manga/watashitachi_no_shiawase_na_jikan/
http://www.mangago.zone/read-manga/life/
http://www.mangago.zone/read-manga/welcome_to_the_nhk/
http://www.mangago.zone/read-manga/oyasumi_punpun/
http://www.mangago.zone/read-manga/solanin/
http://www.mangago.zone/read-manga/sabishisugite_lesbian_fuzoku_ni_ikimashita_report/
Wow Thanks alot!
This is a Manhwa, "From nightmare to love", it's really good :)
Cocoon of the heart
Do you know any manga about depression? I prefer short mangas or oneshots. Thank you!