Both were underage. The father was one year younger than Ai.
Thank youuu(づ￣ ³￣)づ
2 years, he was 14 and she was 16
If it makes you feel any better, it's actually super common for the romantic leads in plays to be played by siblings. That way there's no chance of the leads dating and breaking up/ruining the performance (this occurs super often). They often have stunt doubles to stand in and perform intimate parts (ie. kiss scenes) for the actors. A good example of this is actually the siblings from high school musical who often got the lead roles all the time. Also, I think the author is playing more into the fact that the siblings are carbon copies of their parents and will be using this movie to cope with and process their trauma.
Ai was 16 (as stated in chapter 1) and he was 15 (as stated in chapter 97).
I don't like this auqa/ruby playing their parents that the author has going on, but i'm already in too deep to drop this.
But someone pls remind me again, was ai the underaged person when she got preggos or was it the father?