O~ooh! This expression in Riku's eyes portrays him as the type of Seme i love! >///< the type who is playful yet possessive. And joking around alot, yet caring. ><`
The aknowledging look in Roxas' eyes hint that Roxas may be thinking "i am so lucky to have you by my side" , when in fact it is vice versa ! IMO, that is....