One idea could be a story about two rivals who gradually develop romantic feelings for each other. Maybe they start in a competitive environment like a sports team or a school club.
A good cartoon cat often has cute and distinctive features, like big eyes and a fluffy tail. It also has an appealing personality, maybe being mischievous or friendly.
A cartoon girl in Valentines could be depicted as wearing a pink or red outfit, with her hair styled beautifully. She might be standing in front of a romantic background, like a flower garden or a city at night filled with lights and love.
In 'One Piece', the anime sometimes expands on character backstories or includes additional side plots not present in the manga. The animation quality and color palette might also differ. However, both tell the core story of adventure and friendship.