Board Thread:General Discussion/@comment-6192846-20130929130231/@comment-6192846-20140214155321

Based on the situation, I doubt I.R. would be unaware whether he actually had memory loss or not. It's quite possible though that it isn't necessarily memory loss as much as it is Cherubim purposefully trying to believe he was his brother.

The song has him destroying his portraits in order to "forget his old life" where he was laughed at and despised. It's possible he's actually trying to immerse himself in the fantasy that he is his handsome, eloquent, good-natured brother who could obtain anything and everything he wanted. Either way, the manga does illustrate that he knows who I.R.

I guess we'll have to wait till the book reaches the part where Venomania collects Lilien to get the full picture. (Same with Tette Cetera; I think we have major mistranslations in that portion involving her).