

Why ?
Sometimes I think.. was he genuinely serious about making her life miserable?? Was it when she kissed him ?? Did he feel abandoned or lead on ?? When he met Aiko they were just kids and Aiko didn’t understand what she was saying to PunPun and how much it would affect him in the future. Even after their meeting in the future it truly seemed like she cared for him and wanted the best for him So sometimes I genuinely think why did he take is so seriously as a child??
The concept of God is mentioned quite a bit so I think God placed Sachi in his life to maybe change him and take it off Aiko but sometimes I guess the fate of ones future is too much to avoid.
(Just a personal view)