EBWH-365 | I asked my gentle, laid-back sister-in-law, "Let me have some breast milk," and... — Fumika Kashiwagi

During summer vacation, I’m looking after the kids at my older brother’s house, as both he and his wife work full-time.
My sister-in-law, Fumika, recently returned to work after maternity leave but was uneasy about leaving the baby at a daycare center, so I stepped in to help.

Fumika is a beautiful, kind woman—honestly, I envy my brother.
That said, she’s a bit laid-back—or perhaps just a little scatterbrained.

Case in point:
Even though I—her brother-in-law—am right there in the room, she doesn't mind lifting her top to start breastfeeding.

"Lately, my breasts get so full... they're absolutely bursting."

She seems completely oblivious to the way I keep stealing glances at her breasts.

Driven to the absolute limit of my arousal, the words just blurted out before I knew it:
"P-please... let me drink your breast milk, too!"

Naturally, things didn't stop at just breastfeeding...
And so began a daily routine of having wild sex while gulping down my sister-in-law Fumika's breast milk.