five

So, there’s not a lot of options as far as I’ve found.

This one is so good but technically, it’s a top, a bottom, and a switch between two guys and a girl. Also a doujinshi.
https://www.mangago.me/read-manga/3p_shingeki_no_kyojin_dj/

There’s a Oneshot in here with two ukes. It’s the first story you read, but all the rest are not 3p (except the story beginning pg 130).
https://www.mangago.me/read-manga/bachi_bachi_kijima_hyougo/

This one is a doujinshi. Also two ukes.
https://www.mangago.me/read-manga/we_want_to_service_idolish7_dj/

Sorry it’s not a lot. Hopefully someone else knows more?

https://www.mangago.me/read-manga/hang_out_crisis/
https://www.mangago.me/read-manga/hashi_no_xl_saizu/
https://www.mangago.me/read-manga/shiri_fechi_nanka_ni_sukarete_tamaru_ka/
https://www.mangago.me/read-manga/tadareta_koi_ni_wa_itashimasen/
https://www.mangago.me/read-manga/sick/
https://www.mangago.me/read-manga/meguro_to_akino_wa_kizukanai/
https://www.mangago.me/read-manga/hetakuso_love_step/
https://www.mangago.me/read-manga/rational_pervert_romance/
https://www.mangago.me/read-manga/the_greatest_villain/
https://www.mangago.me/read-manga/hinekure_sakura_ni_koi_ga_saku/
https://www.mangago.me/read-manga/pink_heart_jam/
https://www.mangago.me/read-manga/koisuru_boukun/
https://www.mangago.me/read-manga/there_s_something_wrong_with_my_popularity/
https://www.mangago.me/read-manga/yarichin_ni_yoru_trauma_kokufuku_xxx/
https://www.mangago.me/read-manga/takara_no_biidoro/
https://www.mangago.me/read-manga/aimai_na_wolf/
https://www.mangago.me/read-manga/4_week_lover/
https://www.mangago.me/read-manga/high_clear/

https://www.mangago.me/read-manga/red_string_quests/

https://www.mangago.me/read-manga/the_last_step_on_the_way/

https://www.mangago.me/read-manga/here_u_are/

https://www.mangago.me/read-manga/semantic_error/

https://www.mangago.me/read-manga/ipsae_s_leaf_in_haneum_s_breeze/

https://www.mangago.me/read-manga/my_darling_signed_in/

https://www.mangago.me/read-manga/highest_order/

https://www.mangago.me/read-manga/rejoice_in_your_enemies/

one room ta & here u are

https://www.mangago.me/read-manga/nerd_project/