Doomsday: Doting on My Sister Makes Me a God, and the Goddesses Weep with Envy

[Apocalypse, one female lead (surely), says one thing but means another (tsundere + bratty girl + yandere later on), siscon, sweet romance, light cultivation, fiercely protective, zombies, System]

A zombie tide sweeps across the globe. Order collapses, and humanity falls into depravity!

Me, Lin Xing, an ugly guy with depression.

Before the apocalypse, I was bullied relentlessly, and girls all looked down on me!

But after the apocalypse, the heavens finally smiled on me! The Sister-Doting Makes You Strong System awakened!

Depression from the start? Getting bullied? Not anymore!

As long as I treat my little sister well, my affection and resentment points skyrocket!

My constitution improves! All my abilities soar! I awaken supernatural powers! None of that is a problem!

“Xing, you ugly freak, stay away from me!”

My tsundere little sister says she hates me, but her actions tell the truth as she clings tightly to me.

Lin Fan smiles faintly and gives her a head-pat:

“Good girl. Call me big brother, and I’ll give you anything you want!”

In the apocalypse, women are reduced to playthings, never knowing if they’ll see another day.

But Lin Yue is pampered by Lin Fan like a little princess!

The other women are green with envy and consumed by jealousy!

“Why is he only so nice to his little sister?”

“I want him to spoil me too!” “Please, spoil me too!”

Lin Fan sneers. “You want my affection? You think you deserve it?”

The goddesses who once looked down on me can now only beg my sister, green with envy!

Is my little sister a bratty girl? A tsundere with a sharp tongue?!

No problem. I love spoiling her!

As long as I have my little sister, everything will be fine~!

Surviving the apocalypse? This is what I call living through it!

My goal is... to become the God of Siscons!