"Which one of you bastards bullied my precious granddaughter!"

Once feared as the kingdom's strongest and a "walking disaster," the legendary dragon slayer Gald Vermillion. Even past seventy, he remains in active service, but he has one weakness. It is――his beloved granddaughter, Lilia. When the royal family approached him with a political marriage proposal to serve as the key defender of the frontier, Gald was truly, truly against it. Yet because his granddaughter accepted it "for the country," he reluctantly and reluctantly approved the engagement. But then. At the graduation ceremony party, the foolish prince unilaterally declared the engagement broken in public! The reason was a false accusation of "bullying a baron's daughter" that never happened. His kind granddaughter accepts it matter-of-factly. Learning of this, Grandpa――quietly, genuinely, became furious. "Which one of you bullied my precious granddaughter?" Riding on a dragon to the palace. Shattering barriers, knocking out guards, and infiltrating the throne room alone! This is the story of the strongest grandfather who became so protective of his granddaughter that he took over the palace. ★"[Serialized Version] Which One of You Bullied My Precious Granddaughter?!"★ Serialization begins November 14th. We bring you Lilia's new romance and daily life, sprinkled with the antics of the muscle-brained Vermillion family (with Grandpa leading the charge, of course)! Please be sure to read this one as well! ▶︎https://ncode.syosetu.com/n8667li/