Shinnosuke Nohara's Coming-of-age Story is Just Too Problematic, Isn't It?

My name is Nohara Shinnosuke, I'm fifteen years old, my favorite snack is chocolate chip cookies, I have a dad who recently got promoted to department head; a mom who is a 39-year-old middle-aged woman; a younger sister who used to be the strongest baby on Earth, and is now the strongest elementary school student; and a dog named Shiro whose special skill is making cotton candy. Kazama, Masao, Bo, Nene: "Shin-chan, you haven't changed much at all~" Ai: "Shin-chan, it's been ten years! I've missed you so much!" Nanako: "Shin-chan... in the blink of an eye, you're already a high school student, while I... am already a nearly thirty-year-old middle-aged woman..." Kaguya Shinomiya: "Nohara-kun, come be my vice president!" Yukino: "Nohara-kun, why haven't you been to the Service Club for a while?" Megumi: "Only Nohara-kun... notices me." In short, this is a story about how Shin-chan writes his own youthful romantic comedy after entering high school. The content is mainly slice-of-life, and in addition to the original characters, female characters from Oregairu, Kaguya-sama: Love Is War, Lycoris, and Saekano (possibly later) will be incorporated.