Sister's All You Need., Vol. 14 (light novel)

Even if they have a breakout as an author, marry the girl they love, and become a dad, people can't change their stripes that easily (especially if they write novels for a living)—Itsuki Hashima is still writing and as wild as ever. Meanwhile, as his wife lovingly watches over him, his little sister Chihiro is growing increasingly tired of her unrequited love. Itsuki, Chihiro, Miyako, Haruto, Nayuta, Ashley, Kaizu, Kaiko, Setsuna, Nadeshiko—they've all changed (or not changed) to varying degrees over time, but what does the future have in store for them? The popular romcom ensemble series reaches its conclusion!