A Horribly Happy Time by Diggerman

http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-1-443260658
http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-2-444594351
http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-3-450058690
http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-4-450059775
http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-5-451447285
http://diggerman.deviantart.com/art/COM-A-Horribly-Happy-Time-pt-6-451448008

Effect: Gender Transformation
Method: Direct

Kiss is in the 4th page.
Perhaps a bit disturbing for some, but a kiss is a kiss nonetheless.
I haven't checked his other works, but perhaps there are more. Also he seems to be a good artist to commission.