Gravity Girl Shining

"The weak me of the past is dead. Now I am terrifyingly strong!"
Reborn in Tokyo, with an awakening system, Uehara Hibiki from Class A of the first year at Haneda Junior High School secretly vowed to make a lot of money, fall in love, and become a winner in life.
Although I still don’t understand what that mysterious giraffe is, I have the system to help me. If I can capture the girl and make her awaken “Shining”, I will get the mission reward of “Kirakira Dokidoki”, and my future will definitely be bright!
However, at this time, Uehara Hibiki had not expected that the shining girls recommended to him by the system each had their own strengths and unique skills. Gravity and Low Power were even more amazing, and the secret practice room would give him unexpected surprises.
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P.S. This is a male-led story with a real harem. No stomachaches, no stock speculation, and he builds his harem with an invincible attitude. The Bang Bang worldview is mainly based on [MyGO + Ave Mujica], with occasional appearances by Bang Bang seniors and occasional intrusions from other works.