Sharpen Your Claws and Contract with God

From Midnight Scans:

For her sickly, weak father, Kotone agrees to a wedding proposal to a wealthy man. However, on the day of the wedding, her poor, but beautiful, ex-boyfriend, Hayate, appears. Kotone hid her feelings and broke up with him for their own good, however, she is hugged by Hayate and is asked if she could “swear her love to another guy in front of God”…?!

Includes:
Tsume wo Tatete Kami ni Chigire
Onna ni Naranakya Dame Desuka
Mikken Kinshi!!
Hotel de Koi wo Shita
Shachou no Ikenie