There is no twins probably , moto and jin are the same person... after the trauma he had after being kidnapped and raped he had split personality disorder .. that’s how I see it because other wise it doesn’t make sense that itan was in love with Jin and moto and they never show moto twin even in flash backs, what do u guys think?!
One of the sweetest mangas I've ever read, no sex but very sexy , no love confession s yet so much love between the couples ... It's so beautiful and heartwarming