I'm having trouble with some lines in the manga chapter I'm reading, so I have a few questions for today.
1. A (talking about love letters) : 大体はみんなカワイイ内容だよ。何より僕の為に書いて くれてるんだもん。宝物だよっ
B : 手だしてないよね？
A : 当たり前でしょっ
What might 手だしてない mean here?
2. お姉さまがお優しいのをいいことに図々しいとは思いま せんの？
I know the meaning of each word, but I don't get the structure of this line. Can someone tell me what its meaning might be?
3.
http://i.imgur.com/iAazq.jpg
Does anyone know what this means? I don't get it at all.
