Princess Neon Boom: …. Yes, We have. Celestia and I are not the greatest “friends” you could say. But I and My brother are very fond of Princess Luna.
Prince Neon Bass: Yo’! Wazzup’ Luna!

Indeed, Neon Boom and Celestia have some unwanted memories that they share.

Thanks for the question Kate-Mochi! http://kate-mochi.tumblr.com/

Got a question for Princess Neon Boom Or Prince Neon Bass? Ask Here! http://nekomellow.tumblr.com/

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Neon Boom, Neon Bass + Art ©  NekoMellow
Celestia + Luna © MLP FIM