One-Click Upgrade: Super Decomposition System - Chapter 495

The god king of Xiaoting in the upper realm fights down, and the spirit of the mixed dragon spirit is reincarnated on the earth, runs rampant in the city, and then fights in the sky.

Those who obey me prosper, those who oppose me perish!

- Description from novelbuddy

Getting girls, is such a normal task, but it is almost impossible when you have to cope with being the weakest student in your academy. Ryan Whitemane was a youth with almost no chance of getting a girl until a strange book met him.

Now, with the help of a Succubus, Whitemane can easily understand a girl's feelings, what they want, and what they don't know they want yet. The more he loves, the stronger he is.

But every pact with a demon has it’s costs, right?

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As the owner of an ordinary bookstore, Ling PingAn’s biggest wish was to muddle through life and do absolutely nothing.

On the surface, he is the aloof and standoffish patriot whose sole purpose is to serve the nation. On the darker side, he is an invincible, powerful and mysterious man.