Seonbae-nim, Byeongmunan Watseumnida

Eloise, while secretly experimenting with a lactation-inducing drug at the queen's request, ends up developing mastitis. Taking leave due to her illness, she is discovered by her junior colleague Nardi, who came to visit her, suffering from mastitis...

“...Senior, shall I suck it out for you?”

(Source: Ridibooks, translated)