The Aishi family

Okay so lately i have been getting really into Yandere Simulator, and I've been learning all the lore and endings etc. and i have been wondering about the Aishi family myths, and also the Saikou family? I have wondered about this due to the tapes and also the characters in these families, and i dont seem to have heard much about the Aishi family? We're they all psychopaths? we're Ryoba Aishi's mother a Yandere as well? or did Ryoba start this. And the Saikou family? Who canoncally was Mr. Saikou's daughter that ran away. Was that Megami, or a completely different child? I remember that he mentioned in the tapes that his so called "daughter" that he built the school for and also the one that wanted to travel the world, that if she ever actually joined the school she would immediately student council president. And which in week 10 of 202X mode, Megami Saikou, the 10th rival of 202X mode, immediately becomes student council president. Call me stupid for this, but i genuinely i want to know if this s called "daughter" of Mr. Saikou was Megami. Please tell me:((( thank youuuu!!