Spoiler
Kyosuke and Shunka get married at the end of the manga series
Ayame Misaki was in the 2nd movie, though it wouldn't be surprising if she was recasted as Shunka (the 2nd movie recasted Ken Yasuda, who was Pseudo-HK from the first movie, into a Yoda-expy pervert master).
That said, who're your picks??