After having looked more into it, I'd say, yeah, it's probably a pun on キラ (kira), meaning "shining" or "sparkling". A variant of キラ (kira) is キラーン (kirān), which is similar to the character's name キラーノ (Kirāno).
キラーン (kirān)
キラーノ (kirāno)
Similar looking kana. Similar looking romaji. Similar...