Sister's All You Need. , Vol. 13 (light Novel)

Winter ends, spring arrives, and our protagonists take a new step forward. Haruto announces a new series. Miyako joins Branch Hill Publishing to finally become a professional editor. Chihiro becomes the life of her university's TRPG club. Finally, a 100,000-character love letter inspires Itsuki to pour more energy into his novel and become a genuine protagonist. A new everyday life dawns as the series enters the first half of its final chapter!