I Can Go Back Infinitely and Flirt with the Best Instructor to Gain Eternal Life!

[System, rewind, information gap, instructor, campus, rebirth, multiple female protagonists] College student Jiang Yanchen was diagnosed with a brain aneurysm. The disease may occur due to emotional excitement or strenuous exercise, and he has at most one year to live. But the system was activated on the day after the winter vacation! [Congratulations to the host for activating the unlimited lifespan system] [As long as your guide is shy, this system will provide the host with lifespan and various rewards! [Including but not limited to: life span, cash, real estate, luxury cars, special abilities, disease treatment, etc...] The system gave Jiang Yanchen three goals. Privately, I like the daughter of COS, the English teacher Su Anyu... Nami, Empress, 2B, Asuna, Mei Terumi... Her COS are all top-notch! Lin Mu, a retired athlete and physical education teacher with an excellent figure, is carefree, tall and beautiful, with a great figure, it is hard to be shy, and she secretly likes massages. Chen Yuexin, the psychology teacher of Big Boss, will be found out if he shows the slightest interest in her, but secretly likes to go to nightclubs. This may be a breakthrough... But... To make them shy, physical contact is necessary, right? When Jiang Yanchen got excited, he died! Unexpectedly, this activates another ability of the system... [Infinite Rewind]!