Reborn as a Scumbag Villainous Male Insect, I Win by Spoiling My Wife

Xius is bound by the Villain Bad Ending System and dropped into an insectoid novel where males rule over females. He has to follow the original plot and make his unattainable first love happy by abusing his female spouse, Marshal Claude, every day, until Claude turns evil and tears him to pieces. Only then will he get his bad ending and return to his original world. Xius: ...System, are you a sore loser? Facing his powerful, devoted, beautiful, long-legged "wife," Xius gradually begins to reflect: With such a wonderful wife, why bother pleasing some first love? Rather than be torn to pieces by his wife, he'd rather cuddle up with her and get a happy ending together. --So: The System wants him to abuse Claude, but he spoils him instead. The System tells him to torment Claude during his rut, but he stays up all night to give Claude a permanent mating mark. The System tells him to humiliate Claude in public, but he wraps his arms around him and showers him with kisses and hugs. The plot turns into a complete mess, and the System breaks down. The result: Claude loves him, his first love loves him too, and both are desperate to lay his eggs. On top of that, every female insect in the empire wants to marry him. Has the villain suddenly become everyone's darling? No, no, Xius waves his hands repeatedly. "I only want Claude." * Marshal Claude is considered ugly and too old, and has never been able to find a spouse. In insectoid society, slender and delicate is considered beautiful, so he falsified his genetic score, figuring it would be enough to find a male who didn't mind him and serve him. But this change unexpectedly matched him with Xius, a newly adult male of the imperial family. After their wedding, faced with his unbelievably handsome young husband, Claude is consumed with guilt. That is, until he accidentally gains the ability to hear his husband's thoughts. The young male brandishes a whip and menacingly threatens him, but in his mind, he says: -Claude is so handsome. I want to give him a kiss. Claude: Hm? ...This is actually a thing? Tsundere top VS loyal puppy bottom (maybe a secretly ruthless one?) Theme: Working together to build a better future