Summary
Worried about Kai since he is spending all of his free time searching for Aichi, Miwa tries to get Kai to relax on his birthday. He mentions that a surprise will be waiting for Kai at his home and the surprise involves Aichi. Will Kai like this surprise or will it upset him? Kaichi/Kaiai. Set in Legion Mate Hen after episode 179 but before 180. Some spoilers. Oneshot.