I loved this one shot! Although I wanted to know, was Len abused or something by their parents and they got taken away? OoO I couldn't tell...

Miku sounds really cute, maybe even naïve. I guess it's normal, since she's only six. The idea is really great.
For sure, it's a good one-shot. I would love to see a sequel tho

( 3 )b This was interesting to read! I likee it.

Say, what happened to Rin and Len's parent's...? I didn't understand that part..