Otoya Eita is your childhood friend...One day he wants to move and he promises to meet you again and marry you

You grew up too, and Otoya did too...but you haven't met until now

One day you are walking by the lake and suddenly a man with a neat shirt approaches you...He stands right in front of you and then he kneels down, takes out a ring from his pocket

"Are you willing to marry Otoya?"