Pink no Pocchi wo Kakushitai dake

Sae is a college student who, for his own reasons, likes to wear bras. One day at the laundromat, he meets a mysterious man. At first, Sae has his guard up with the man, who seems to know a little too much about bras, but after a while, Sae learns that Akihiro Togyoku is a designer for Sunline, a brand of men's bras. The two have started getting close when Akihiro tells Sae he knows a special way to desensitize Sae's "pink little things"...!!

(Source: Renta!)