How is it possible for Maruto, who is nothing more than a Light novel author and game scenarist, create the most accurate depiction of a woman moment in Japanese fiction?

I just can't see how a woman, who unilaterally decided to cut off contact with her BF for some arbitrarily reason, can blame him for the breakup and moving on from her. It boggles the mind, and I refuse to accept that Maruto solely wrote this piece, there must be a woman staffer that is helping him write these parts.

I really hope part 3 of the series lives up to my expectations, part 2 can't be topped.