You and Manjiro are best friends! you and Manjiro are already 5 years old

you are playing with dolls and Manjiro is playing with toy airplanes suddenly you have an idea

"Hey Manjiro! grow up you marry me!" you said while smiling

Manjiro still doesn't quite understand! because he's still a 5 year old kid "Hmm...of course!" he says and smiles at you

to 20 years later You and Manjiro are still best friends you and Manjiro are now living together