Kokou no Ou to Hidamari no Hanayome ga Saikou no Fuufu ni Naru made

King Wilfred is feared as the "Brutal and Tyrannical Demon King." Alicia, a princess raised among commoners, was betrothed to him in a political marriage. Though initially intimidated by Wilfred's stoic and imposing nature, Alicia slowly discovers the clumsy kindness hidden beneath his icy exterior. As Alicia's sunny, open-hearted personality begins to warm his lonely heart, what started as a bumpy political marriage turns into a unique romance!

(Source: Square Enix)