Takabisha dakedo chikubi ga iyou ni yowai onna joushi to shuugyouchu zutto chikubi tsuntsun — Office rezu: Ikura Unno × Ayaka TomodaMovie

Ayaka is an impeccably competent career woman who runs her department with an iron hand. She has exactly one problem: her nipples are absurdly sensitive — so much so that she cannot stand having them touched. One day her slightly clumsy subordinate Ikura finds out about that weakness. Watching the stern Ayaka moan sweetly the moment her nipples are handled lights a lesbian fire in Ikura, who keeps teasing them all over the office, right in the middle of the working day. Ayaka gets turned on in turn, and the two end up working each other's nipples over between the desks.