Soul Swap? With My Own Little Sister?

[Soul Swap + Everyday Life + Goofy Banter + Wild Imagination + System + Extra Sweet + No Toxic Content + Healing + Heartbreaking + Permanent Swap + Plot] Sit back and enjoy, dear readers! Su Zixiu never imagined that one day he would swap bodies with his little sister, a cute little girl. After a dizzying moment, he finds himself in his sister's body, wearing pink pajamas, while his sister takes his body and runs wild. "Well, hello there, cute maid. You look kind of familiar." "...Sorry, Master. We're open right now, so I need to serve the other customers." Seeing the furious little girl in front of her, who is clearly trying hard to hold back, Su Xiaotao is so amused by her gritted-teeth expression that she almost bursts out laughing. She clears her throat and says in an affected voice, "As expected of my little sister. You're so cute~" "Su. Xiao. Tao! You. Need. To. Stop. Right. Now!" He thought his sister's teasing was the height of embarrassment, but his deskmate Lin Xiaolu comes at him wave after wave. "Come on, little sister Xiaotao. Let me hug you a little longer~" "By the way, Xiaotao! Come over to my place tonight!" Su Zixiu senses a strong yuri vibe. At night, beneath a meteor shower, aboard a Ferris wheel. "I like you, Xiaotao." "...I like you too, Big Sister Xiaolu." The soul of a straight guy is purified in that moment, and then a small misunderstanding sends the plot into an even wilder spiral. "Little Sister Xiaotao is mine!" "She's obviously mine. Haven't you heard of first come, first served?" Su Zixiu smiles faintly, rises onto his tiptoes, and pulls Su Xiaotao and Lin Xiaolu into his arms. "You're both my wings."