But, I have something that might make all Kyungseo's shippers jumping in joy! With my hawk eyes, I spotted their interactions @ MBC Gayo Daejun! 

After Changmin hugged Seohyun, you can see she was waving at Kyungsoo who bowed to her on the same time. (0:35)

Seohyun patted Kyungsoo's shoulder! Are they close? Probably, because of their collaboration at SMTown Concert, right? (09:03)

Since Seokai won the first place in the poll, I will update their oneshot, later. Thanks for voting, babies! ♡