You're Too Nice! -I'm Not Letting You off Until You're Mine-

Mao Uehara is talked into taking her twin sister Rio's place at a blind date. The mystery man turns out to be her beloved boss, Yuusei. The young chief has his own reasons for being there. Just as Mao thinks it's about time to call it a night, Yuusei takes her hand and pulls her away with him. He captures her lips in a kiss and they spend a passionate night together.

(Source: Renta!)