My Yandere Has Raised Me for Years, and Now She Calls Me Her Childhood Groom?

[The blurb isn't doing this story justice. Please read the main text.]

[Obsessive love + possessiveness + pure romance + older sister]

In the darkest year of Lin Tao's life, Su Qingxue appeared before him like a ray of light.

That day, she wore a black dress and carried an aura that warned strangers to keep their distance. But when she looked at Lin Tao, a slightly awkward smile appeared on her face.

"Would you like to come home with me?"

And so Lin Tao was taken home by Su Qingxue.

Lin Tao called Su Qingxue "big sister," and Su Qingxue called Lin Tao "little brother."

But as the days passed, things started to feel wrong.

"Tell me, who was that girl?"

"Taotao, come back quickly. President Su has fallen."

"I can't move easily right now. Carry me to the living room."

"Taotao, there's thunder tonight. Can you stay with me in my room?"

Late at night, Su Qingxue watched Lin Tao sleeping and smiled faintly.

"So, Taotao, you can never leave your big sister."

"Even if... you have to lie to me, lie to me for the rest of my life."

On the bedside table, two marriage certificates gleamed brilliantly in the bedroom light.