|Aiko's Number One Happy Day|
|Japanese Title|| Aiko no Ichiban Shiawase na Hi
|Episode №||48 (198)|
|Air Date||January 5, 2003|
|Episode Direction||Yoshihiro Oka|
|Animation Direction||Toshie Kawamura|
|Next Episode||Forever Forever, Friends|
|Previous Episode||Even If You Go Far Away|
Aiko goes to Osaka to help take care of her grandfather at the hospital. Her parents make the decision to take care of him at home, and as a result, decide to move back to Osaka.
- This is the first time Aiko wears overalls following her wardrobe change since the beginning of the Motto season.