What is this? A crossover episode?

Don´t worry, I´m not shipping them
I just want to share that in my opinion, these two have similarities, jokes lovers, a mixture between childishness, responsibility and fun, both deep and sentimental, even if they hide it, both crazy but peaceful, calm the most of the time, I know they could have a great time together... Can you imagine them sharing music or histories?

They are just two cool characters, my favorites in their respective series. Interesting, music lovers, unfortunate... etc.