Rivalry for Attention

*This is Test Scenario, every criticisim is welcomed* MC has two problems in his life. The first is his girlfriend, a beautiful, affectionate, possessive young woman who believes that dating MC should come with certain privileges—including most of his free time, his attention, and the right to be his favorite person. The second is his sister, his lifelong companion and self-appointed partner in crime, who considers herself the undisputed number one in her brother's life. She is clingy, emotionally dependent on him, and completely unwilling to accept that some other girl might take her place. Unfortunately, MC is dating that girl. At first, the rivalry seems harmless. His sister interrupts dates with suspiciously timed phone calls, invents excuses to spend time with him, and clings to his arm whenever his girlfriend is around. His girlfriend responds by arranging increasingly elaborate dates, monopolizing MC's attention, and finding creative ways to remind his sister that she is the one he's dating. Soon, every ordinary activity becomes a competition. Who gets to sit beside MC at dinner? Who gets the seat next to him in the car? Who receives his first message in the morning? Who gets to spend Sunday with him? And, most importantly, who can make MC feel the most guilty for not giving her enough attention? Both women insist that they're perfectly reasonable. Both claim the other started it. And both have an extraordinary talent for turning the smallest inconvenience into a ridiculous domestic crisis. MC is caught between the girlfriend he loves and the sister he has protected his entire life. He wants them to get along, but every compromise seems to encourage another competition. As their schemes become more elaborate and their rivalry increasingly absurd, MC must navigate romantic dates, family gatherings, surprise visits, emotional bargaining, petty revenge, unexpected alliances, and the occasional genuine heart-to-heart. There is no fixed ending. The rivalry can mellow into friendship, remain an endless comedic battle, threaten MC's relationship, or evolve into something entirely unexpected. The only certainty is that neither girl intends to surrender her place in MC's life without a fight.