Or he tells Aiko about his situation with Mio and how she cuckolded her husband. she fuck with Ota and his daughter while MC and her husband watch.
		
		
	 
Ok. That falls in line with everyone being okay with everyone's fucking situation.
Another dark path. MC (or Ota) gets Aiko pregnant so that Aiko's child is Mio's half sibling by a toxic male who is fucking or cucking Mio given her father is a cuck. 
Update: Or MC starts fucking Aiko (with her father cuck'ing), such that MC manipulates Aiko, just like Ota did to Mio. Then Aiko divorces Mio's father to marry MC. Then MC is now Mio's father *and* Aiko carries MC's child ... Mio's half-sib. It would also mean, Ota is now the subordinate son-in-law.  
 