Boku No Ano Ko

Briefly about Boku No Ano Ko manga:

A sweet, innocent tale of first love! Amakura Chigusa has been engaged to Aki-chan since he was very young, and he’s been looking forward to marrying her his entire life, doing everything he can to become a man worthy of such a great bride as his Aki-chan. Unfortunately—he’s never met her, as their parents agreed not to let their children meet one another until they were both 16 years old. But when Aki-chan’s parent's business goes under and they leave the country without her, leaving no forwarding address, it looks like Chigusa is