Chapter 20 was crucial for his mother's growth, especially as the alpha mother; when Haruka said, "You finally listened to what I had to say," it was something he needed to say because it validated both the adult and child versions of himself, who made the biggest decision of his life that led him to become the man, father, and husband he is today. He broke the chain regarding the idea of what the social structure of an alpha is supposed to be, do, and think; it is shown that she was forced to learn and adapt to this norm, but it stopped with him the moment he left and refused to continue that cycle of single-mindedness. By doing that, he made a healthier choice, especially regarding his partner and mate, Kosuke, and how he can encourage him to keep sewing, wearing the pink shirt he bought him, along with his parenting style.
It is not easy to accept your sexuality, and it is okay to question and even welcome to explore it and your identity, but please do be careful. Akira's ex made the choice to get involved with a man, and when it didn't go as planned, not only did he blow him off, saying "forget it and block my number if you want" along with some hurtful words, but for him to pop back up and now want to "talk" with him like nothing happened rubs me the wrong way. I'm glad he opened up to Hokujou, especially when his ex's words still affect him and how he sees himself and his own sexuality to the point he cried thinking this time was going to be a repeat. Akira deserves a good love where he can love and be loved in many ways and I glad it's Hokujou who wants to earn his love and prove himself to Akira after the bad truama he had received from his ex