My Ex-Girlfriend Just Returned from Another World and Became My Stepsister

Li Changan travels through the high-tech city, removes the human body limiter, ignores growth restrictions, and becomes infinitely stronger! Doing 300 push-ups will increase your strength by one kilogram. Doing 30,000 push-ups will increase your strength by one hundred kilograms. What about more? What about weighted push-ups? What about exercising on the super-gravity sun? Breathing techniques can increase Qi and blood, but what happens after the upper limit is lifted? Drawing a sword a thousand times will gain proficiency, but what about ten million times? So, dressed as a high school student, he started exercising like crazy! Until that day, my father opened the door with Li Changan's ex-girlfriend. Dad: "Chang'an, this is your stepsister Su Tian!" Li Changan's face froze. What should I do if my ex-girlfriend becomes my stepsister? Waiting online, very urgent! ... My name is Su Tian. I just returned from another world and found out that my ex-boyfriend has become my stepbrother. Send it! But something seems wrong with this ex-boyfriend? One day, looking at Li Changan doing push-ups with a mountain on his back, Su Tian silently turned on the camera. "Brother, you don't want anyone to know, right? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.