Hetare Maou to Tsundere Yuusha

To defeat the notorious Demon King, Prince Ike bravely storms the castle, ready for a fierce battle—only for the demon to run away?! What should have been a fight to the death quickly turns into an unexpected game of chase, as Ike discovers that the feared villain is actually timid and despises conflict. And when Ike gets injured, it's the Demon King who cares for him more than anyone else, even going out of his way to understand Ike's feelings. Ike arrived determined to defeat his enemy, but now he finds himself wishing he could spend more time with him...?

(Source: Seven Seas Entertainment)