The Grand Duke of the North's Crazy Son-in-Law El yerno loco del Gran Duque del Norte

También conocida como: Bukbu Daegongui Michin Derilsawi · 북부 대공의 미친 데릴사위 · The Northern Grand Duke's Crazy Live-in Son-in-Law · El yerno loco del Gran Duque del Norte · Northern Daryl · O Genro Louco do Grão-Duque do Norte · The Crazy Son-in-Law of the Grand Duke of the North · The Crazy Son-in-Law of the Northern Duke · The Crazy Son-in-Law of the Northern Grand Duke · The Mad Heir of the North · The Northern Archduke's Crazy Son-in-Law · The Northern Duke's Crazy Live-in Son-in-Law · The Northern Grand Duke's Mad Son-in-Law · The Northern Grand Duke’s Crazy Son-in-Law

Galahad, an elite wizard and top agent of the Intelligence Bureau, was sold off as the Grand Duke of the North's son-in-law for political reasons. Meanwhile, the ice-cold daughter of the duke is the "key" to defeating the Demon King and saving the world. Determined to win her heart, Galahad approached her with his usual madness and an utterly ridiculous level of determination. However, his target is a Swordmaster who burns mana, and even the slightest touch from a mage causes him to endure excruciating pain that courses through his entire body... "I want to touch her again. This time, just for a bit longer—"