I Think Our Son Is Gay manga volume 4 features story and art by Okura.

As Hiroki comes home from school every day with new tales of friend Daigo's feats, Tomoko wonders about the future of her eldest's schoolboy crush. And if young love wasn't confusing enough, Tomoko is also keeping tabs on Hiroki's childhood friend Asumi, who appears to be nursing a crush on Hiroki herself!

But nothing can prepare Tomoko for the day Hiroki comes home with a shocker—Daigo's got himself a girlfriend! How will this new development affect Hiroki, who's still figuring things out? Even as the friendship between Hiroki and Daigo undergoes a change and the relationship between Hiroki and kid brother Yuri evolves too, life goes on for the Aoyamas and their loved ones, all under mom Tomoko's caring and supportive eye!