Not in love upgrade system

Jiang Tian fell in love with a certain girl and vowed to be with her for the rest of his life.
However, the god of love doesn't believe it at all.
As a result, Jiang Tian got the "Not in Love" upgrade system. As long as he can stick to his heart and complete one task after another under the guidance of many beautiful girls, he will get various routines and props to fight for his true love.
Warning, high energy ahead: a big wave of loli, sister-in-law, princess, black-bellied, tsundere, natural fools are attacking!

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