I mean of course it can work, but what makes me curious is that if Aizen cuts him(before Toshiro freezes him) just by touching him with kyoka suigetsu, kyoka suigetsu will freeze and lose the perfect hypnosis abillity and toshiro could just brake the sword. But Aizen would need to get close with out getting frozen, so much potential coming from Toshiro, and btw next week is a holliday in Japan so i dont think we will be getting a new chapter.