はじめてのルーブルはなんてことなくなかった絵。本編とは関係ないのでお気になさらず。

"The first time I went to the Louvre wasn't something unspecial" drawing. It's unrelated to the story, so don't worry about it.

<tn>The part in quotes is a slightly changed lyric from <i>One Last Kiss</i>, the ending theme of 3.0+1.0.</tn>