Amu and Rikka bringing Hikaru to the Amusement Park in order for him to smile. He still doesn't smile and Rikka thought a way...
Ep.23: Oh, no! Rikka and X Egg?
In preparing for Graduation Party, Guardians are in Loyal Garden. Amu and others saw Hikaru cheering Yaya, who is afraid of being alone, up and felt relax, but...
Ep. 24: Believe me! My Pure Heart!
Amu and others went to Rikka's apartment because they heard something weird from Hikaru. They saw Rikka and shards of x eggs!
Ep.25: Dokki Doki (hiragana) no Dokki Doki (katakana)!! (Bumping strongly)
Amu seeing off those x eggs to their owners and when she got Home Ikuto's there! She cannot hide her surprise, and they decided to go to the amusement park.
Thanks for tsubasalover@MAL, for these translations :*
Edit.
Episode 25 is the last episode of Shugo Chara Party!
