Inés makes it clear that he’s “frighteningly good” at sex. Manhwa omits that her competitive spirit is always challenged by his skills so she also brings out her skills because she doesn’t want to lose to him. <3 End result: amazing sex every night. She’s such a tsundere with him but still gets caught up in his mood. :D
Now, she’s upset that he looks energetic after a night of sex while she’s weak and trembling. 😂 It’s amusing how he triggers her competitive spirit without even trying.