Responses

well, he was 29 when the story started and at some point Katou got him too many gifts for his 32nd birthday and after that was an award ceremony so +1 year, skip earthquake year +1 , another award ceremony +1 and they have random time skips, so I can say at least 36 which makes sense since he left home without parental support and consummated Shou when he was still a minor (18 or 19) an shou is 18 now. SO either 36 or 37.
how old is iwaki now??