Nippers

idk if this helps, but cherry blossoms after winter is good but longer. if you are looking for a shorter one i would suggest hard x heat x heart. the plot is really stupid but the art is good!

Chiku bingo

Here you go
http://www.mangago.me/tag/nipple/

http://www.mangago.me/read-manga/ashita_wa_docchi_da/
lol kinda ig

I love this list so much<3
http://www.mangago.me/home/mangalist/710853/