The only problem - if you want to call it that, is if they hooked up, Saikawa would have to be a lolicon for most of her life. She will be twice Kana's size in as little as 6-7 years!
Kemono Friends pairings are the best because each friend has their own abilities which they offer unconditionally to their partner. Together, the pair can overcome anything. And isn't that what love is about?