Hm...well, head-canonically, I was thinking that Ikuu would have been in SEED for five or so years, starting out as a MagiTech tester and eventually going into the field operative sorta thing after three or so years. So the earliest they could have met is when the Bunnies were 25 and 13. Think they'd have any reason to interact with someone who has prosthetics for all his limbs though?