Daidai~
Chen's name (橙) can also be read "daidai", which has a variety of other meanings.Chen... You can call me "Ai-chan" if you like, you know?
Likewise, Ran's name (藍) can be read "ai", which usually means love.Daidai~!Y-you're mistaken, it's not bullying! It's a nickname! Because her name's Chen!Bastard...I-I see, a nickname...!