I Compete with the Male Lead for the Female Supporting Role! [Quick Transmigration]

"What? The male lead prefers the intern over his fiancée? Leave it to me! A delicate and soft young lady—my absolute favorite! What? The male lead prefers the stand-in over the white moonlight? Leave it to me! A career-driven queen—totally my type! What? The male lead prefers the demon sect's saintess over his junior sister? Leave it to me! A heroic and dashing swordswoman—the stuff of my dreams! What? You ask who I am? I’m just an ordinary person who ditches the male lead for the female side characters +=V= A carefree, indulgent romp—no overthinking the logic here! The female lead is actually a cold-hearted powerhouse who only acts silly and pitiful in front of the side characte...