They're so cute and canon

Mydei: added to watchlist (to move up). Mydei like Blade in MoC is experiencing a major improvement to his score thanks to Hyacine, Tribbie and [Castorice] thanks to him being able to slot in alongside them more efficiently than most. While not nearly as strong without one or multiple of them, we’re watch-listing him to move up as we feel his position right now doesn’t reflect his current capabilities.

They're literally made for each other.

So you're telling me that Mydei owes his kindness and aversion to needless war despite being the Demigod of Strife/the prince of a city of warriors to him absorbing Cas' data and her Primum Mobile of Peace. Mydei is the person he is largely because of Cas...