Quick Transmigration: The Supporting Lady Wins the Male Lead's Devotion by Taking It Easy

[Quick Transmigration] [1v1] [Sweet Romance] [Strong Female Lead] [Redemption] [Older Sister and Younger Brother] To restore her mental strength, Bai Xi is forced to transmigrate to three thousand worlds and complete missions. But Bai Xi just wants to slack off. Who cares who does these missions! She just wants to laze around and flirt with the cuties. Her villainous younger brother locks her up. "Sis, I want to hide you away so badly." Go ahead and hide me. I don't want to go out anyway, but don't go crazy on me! The merfolk boy winds his tail around her waist. "Bai Xi, will you touch it for me?" He called me big sis, so I guess I'll touch it. Her obsessive older brother says, "You're the only little sister I have." But I don't want to be your little sister. I want to call you my baby! I've searched the whole world, and only you can save me. [The male lead says one thing but means another, and he's soft-hearted too. Proceed with caution if that's not your thing.]