Aesthetics

Jack and Jayci Kline are nothing like their father. Instead, they choose to be like the mother they never met.

Sam immediately tries to connect with them whereas Dean is more ambivalent. Castiel has taken on a fatherly role of sorts.

What starts off seemingly well naturally gets worse.

The Kline twins have great power and with great power...

(Seasons 13-15, with a brief mention of the end of season 12 (plus a tiny bit extra))

*I don't own Supernatural. All credit goes to Eric Kripke. I only own Jayci.*