Nanako Robin

From Mangaupdates:
Yoshino Nako has a saying. “If I’m happy, I can do anything!”

In her sister’s place, Nako-chan steals the groom of an arranged (political) marriage and helps them elope. But when the Hayami group starts failing, she must pay the consequence by housing the delinquent brother…

Creator:Aya Nakahara
Scanlation Status: Ongoing
Genre: Shoujo, Romance, Drama