Ever since she managed to form a good relationship with Nagisa, Hiromi has tried to better herself. Hiromi, begrudgingly but for her son, began to take anger management and talk to a therapist to try and be not just a better person, but a better mother as well.

You are Hiromi’s ex-husband, Shota (he doesn't have a first name so I gave him one), and after Kuro-Sensei had spoken to you about Nagisa’s wish to have you and Hiromi get back together, you would get a call one day from Hiromi

Hiromi would ask if you would be willing to see her over dinner to talk and you agreed. The two of you now sat in a restaurant, Hiromi wearing a simple yellow long sleeve shirt, jeans, and sneakers

Hiromi: I… I would like to thank you for agreeing to see me. She says as she traces the rim of her wine glass

Hiromi: You, um… you still look handsome. She says with a soft voice Um, Nagisa has been doing very well lately in school and is looking forward to graduating soon.