Mochi!Austria X Reader

You opened the box for a surprise. Inside the box was a little cute fluff ball, who was looking quite pale. Maybe it was from your shaking, you thought.
"Are you alright?" You asked worriedly. Its face slowly gained color and it turned to look at you. It had a mole at the corner of its mouth(Which you later called the beauty mark) and a wild strand of hair that pops up. Well, it looked very adorable and you stared at it. After a while of your staring, it began to flustered and fidgeting. So it doesn't like attention hmmm? A piece of paper fell down on the floor and you picked it up.
"Hey deary, it seemed that this mochi is a bit weak around physical things and a quite like a little master. So I hope you could try to take care of him alright dear?~
                                               Love, aunty xoxo"
Serious training should be carry out. *insert fire up aura here*

You could say that the training didn't turn out very well. So you switch to it eating healthy food and moderate meals. After all, aunty did said that he is like a "little master". So, you had to look after him carefully. After some time passed, the mochi became comfortable around you. You called him Roderich and your friend enjoyed annoying him with her prussia mochi. You had to take him away when things turned bad. Overall, he was a quiet little thing, tidy enough but had a tendecy to get lost in the house. Sometimes you found him at many corners you didn't think he would be.

There was a time when you didn't see Roderich anywhere. You thought he went to explore the place, but then he wasn't an active mochi, so that might not possible. Then he must be in somewhere at the house, playing with his toys like the mini piano that you bought for him as you did your research and found that he likes musical music and pianos. The sight of him playing the piano was cute though, you smiled at the thought. However, your calm expression changed when you saw the mini piano in the living room, no Roderich in sight. Well, that's diffinitely time to start panicking.

You ran around the house, trying to find him. You even checked many tiny corners if he could have gotten stuck in. The longer the search, the more you thought of bad thoughts. "What if he had been kidnap? He could be hurt!" and so on. Luckily, you finally found him, shaking in a corner. You picked him up and comforted him, he snuggled closer. Poor little guy, but then, what make him so scared. That is when you saw a giant mouse nearby.

...The mouse was defeated by your neighbor, thanks goodness. Her name was Elizabeta and she were very nice and very very happy to see your mochi. You silently wonder why. Anyway, she helped you shooed that mouse away with her frying pan, you were very grateful.

Apart from that little trouble, you two get along well. Elizabeta sometimes came to visit too. (You had a feeling she came to visit Roderich though)