"I want you to suck my breasts." The problem of Anzaki, a mid-level employee who has been with the company for 5 years, is...breast milk coming out of his breasts! Whenever he is stressed at work, his chest gets tight and breast milk leaks out. When he was at the limit of using plasters and breast milk pads, he asked about his breast milk problems on the Internet and was advised to “breastfeed”! Just when he thought it was an impossible task, Yamauchi, a young ace, invites him out for a drink. He is a brusque but serious man who adores Anzaki... He boldly asked him to “breastfeed” and for some reason, he readily agreed! Until he is cured, he has a breast-feeding relationship with a junior colleague...? 何で俺から母乳が――!? 仕事のストレスからホルモンバランスが崩れ、ついには母乳が出るようになってしまった安崎。 仕事中は母乳パッドを貼って対策はするけど周りにバレないか気が気じゃなく、調べても「赤ちゃんに吸ってもらうのが一番」なんて参考にならないものばかり。 そんな矢先、若手のエース・山内から飲みに誘われる。 仏頂面だけど新人研修で担当して以来、何かと自分を慕ってくれる山内なら…と思い切って「俺のおっぱいを吸ってほしい」と懇願したらまさかのOK!? 母乳対策としてお願いしたのにいざ吸われると何だか気持ち良く、後輩に授乳する日々が始まって――？