Should be this one..?
Thankss
Someone mentioned it above with the haikyuu dj. If u want to check it out its http://www.mangago.zone/read-manga/haikyuu_dj_chu_chu_chew/ . As it is also the mouth which is the erogenous spot
I see the one you are talking about ╥﹏╥
Someone found it but thank you !
Thank you (≧∀≦)
So, this is a couple trying to find the uke's erogenous zone and it happened to be the mouth ╮(￣▽￣)╭