That is such a good theory!! Infact kiritaka's hair colour somewhat matches with police chief lady. And let's be real, even maria at some point in the story admitted that she and Okaya have too many similarities.
This is a good theory but i remember vaguely at some point she mentioned she had plastic surgery to avoid being connected to her son and husband so them looking alike is a total coincidence but I do agree the mindset is so similar they could definitely be mother son
True, but even before her surgeries she looked more like Okaya than Kiri-kun. She and her husband have dark hair like Okaya, his eyes are beautiful like Maria's/Mary's and sharp like the detective's.
Plus Okaya's dad has such a cute baby face like Nagare, whose hair matches Okaya's mom's.
As a psych student this is very interesting to me cuz imagine if that were the case how would have okaya and kiri turned out? Kiri mightve turned out the same but what about Okaya? Would he also turn out the same? Would Maria and her husband share the same fate as the og parents? Nature vs nurture type shi
Okaya was the real son of maria Sensei HAHAHAHAH like imagine if they switched up when they were babies since look at em they look a like