That would be episode 26 and chapter 14 in the mangaHope that helped!
episode 53
Ikuto gets sick in Episode 74 of Shugo Chara titled "The Sick Cool and Smart Character Transformation!" where he collapses due to overexertion.
Ikuto comes back in the Shugo Chara Encore
Ikuto is from the manga/anime Shugo Chara and Shugo Chara Encore
Ikuto apperas ad death rebel in episode 76
Ikuto kisses Amu in Episode 25 of Shugo Chara titled "Sparkle With All Your Might!"
Ikuto transformed first in episode 13.Hope that helped!
Shugo Chara and Shugo Chara encore
I don't know if he gets beaten up in Shugo Chara! Doki!, but I know that in Shugo Chara, he gets beaten up after saving two girls from some guys. Amu treats his wounds and later she and Ikuto go to an amusement park that's going to be torn down. That's in Shugo Chara Episode 26. Other than that, I don't really know another episode. Sorry if I couldn't help. :/
yes Ikuto does come back in episode 24(at the end) and all of 25!
Episode 66: Uproar A Cat-Eared Girl!
Out Of Every Episode Of Shugo Chara I Think I Saw Him Blush In 1 Episode When He Was Playing The Violin and amu says his music was sad yet beautiful.