Mamono Musume to no Seikatsu ~Lamia no Baai~

Years ago, Light made a promise with his childhood crush, swearing that they would one day meet again to get married. Now, years later, he is surprised to find her standing on his doorstep! Shes ready to pick back up where they left of, but theres a problem... she isnt quite what he remembered. She a stubborn tsundere lamia named Leimia, who is has arrived to bring her husband-to-be back to her tribe. Light isnt sure how to react to a lamia at his doorstep, let along one who wants to marry him. Light refuses her invitations, but Leimia wont give up that easy! She decides the best way to convin...