Au au gyu au here! I wish i could write this but i am sure that if i do it, it will be such a loooooooong fanfic i.i

Also about the sookai part. Soobin and Kai were their first in everything. They were childhood friends and first date, first kiss, first time. They were together for almost seven years but Soobin got insecure. His own friends and especially his parents were always saying he was too young to think into marry Kai bc he didn't have other experiences to compare, sometimes they would even say that Soobin didn't love Kai bc that was just emotional attachement. So thats why they broke up.

The time Soobin was a samoieda was after two weeks after their break up and Soobin tried to date and was bad (Binnie levels of shyness) and he stayed as a samoieda for 3 years which te was "missing".
When Beomgyu and Kai meet each other, Gyu knew about Kai's missing ex-boyfriend and kind of used that to woo Kai's heart.

The way to break the curse is understand, really understand the reason why they were hurting Kai ( Kai was hurt at Soobin letting people create insecurities about their relationship when Soobin himself seemed sure about them but still chose to listen other people than trust his own guts. Beomgyu was obstinate with his work. The kind of work were te didn't have time to take care of himself and were working sick and missing important stuff not only with Kai, like Yeonjun is tua brother here and Beomgyu didn't attend his brother weeding or saw his tiny nephew. Gyu was even developting some arritmia bc his job). And they also need the will to change it all to turn back to their body.

So while bickering a lot, Soogyu would need to talk about many important things about each other and while telling that falling in love again for Kai bc Kai IS that kind of people who talks with his dog so Kai would talk with "love" how he still loves Beomgyu but those feelings he always had for Soobin is coming back and how scaried he is.
Aaaaaaand "love" would listen to Kai and Yeonjun share MANY embarasing stuff from Beomgyu bc Yeonjun and Kai would LOVE to share to each other all the idiot, silly, weird and embarasing stuff Beomgyu did in his live.
At least in this Soobin would understand him bc Kai e Tyun have the same kind of talks about him. So Soogyu's plan is to be friends with lea to get Kai's embarasing moments but what they mostly get are adorable stuff bc kai's embarasing moments ALWAYS happened in dog form.
So puppy kai in dress, puppy kai near a misplaced poo, sad puppy kai near a broken thing
The adult photos of kai's embarasing moments always has something broken and a puppy face so Soogyu won't have a good revenge material