Kamisama x Oresama x Dannasama!?  

Pray for Love, カミサマ×おれさま×旦那様!?

Amane was nine years old when she wished for her grandfather's health. Shizuka, a god, appeared and promised to save him in exchange for Amane becoming his wife at sixteen. Now that Amane is grown up, Shizuka has cast a spell on her, turning her into a little girl. She wants Shizuka to change her back to her normal size permanently and leave her alone so she can avoid marrying him. Despite being attractive, Shizuka still desires to make Amane his bride and consummate the marriage.