Is the Yandere Childhood Friend Heiress a Boy?

(Gender swap, yandere, older-sister type, motherly type, multiple female or male love interests, slightly intense)

I, Xia An, have been prey to two “demons” ever since I was a child.

One is my childhood friend, Su Wanqing, the school belle and a perfect young heiress.

She is cool and elegant, yet she shows me nothing but smiles, tenderness, and care.

The only problem is that she has severe yandere tendencies.

Any girl who gets close to me suffers an “accident.” My social media is monitored in real time, and there are at least three hidden cameras in my room. She smiles and says, “An'an, everything about you belongs to me.”

I put up with it for more than a decade. Then, on graduation day, I finally work up the courage to confess: “Actually, I like men.”

Silence.

Suddenly, she smiles, her expression twisted and crazed.

“What a coincidence!”

Wait, what is going on???

The other is my gentle, water-like master, who turns out to be a white snake spirit. I saved her when I was little, and she sees me as the one destined to be her trial of love...