PIERCINGS

Mangas
https://www.mangago.me/read-manga/punks_triangle/

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

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

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

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

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

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

Zero Lover
Dogusare dandies
New world order (I think)
Semantic Error
Unsleep

Sugar Trap

Bite marks and Fluorite
https://www.mangago.me/read-manga/bite_marks_and_fluorite/

Burlesque Night
https://www.mangago.me/read-manga/burlesque_night/

https://www.anime-planet.com/users/KinaSenpai/lists/piercing-your-heart--bl-characters-with--1241712