I believe it says:

壁の向こうの人はこれをどういう風に使って遊んでたんだろう？
・・・こんな感じかな？
「うわっとっと」

村雨飛鳥
相互リンク感謝！

Which, if I undertand it all correctly, translates to:

I wonder how the people on the other side of the wall use this to play?
...Like this, I wonder?
"Uah-ah-ah!" [<-- Direct romanization would be "Uwattotto"]

Murasame Asuka [<-- I think the kanji here is a name, but the kanji may have a different reading than what I wrote here]
Thanks for mutual linking!