When Chitose kisses Luca after the first battle against Ricardo, Iria makes this high pitched screechy sound. R makes it even better with Chitose apparently kissing Luca aggressively, judging from Luca's reaction (who shuts his eyes tight and waves both of his hands wildly in panic).
A skit featuring Iria, Ange and Ricardo discussing Ricardo's health. Iria thinks he lacks color in his face because he was a reaper in his past life. Ricardo says if that was the case Ange would be a man despite her looks. Ange says she was surprised he could tell. Their reactions are awesome.
In the original, when Hermana accidentally pushes Ange's Berserk Button, the scene goes deathly quiet as Ange descends into Tranquil Fury, complete with a flash and thundering sound. In R, the thundering sound is replaced by a mere flashing sound, but to make it up, the scene has Kongwai gets startled at (in his own words) how terrifying Ange becomes.