Gamer Superstar by NunuXD

I'll try not to spoil too much, but the story begins with the New Noah taking over the old one and finding himself with a new, troubled family whom he finds himself coming to love. He gains a system that allows him to rapidly absorb and apply new knowledge through skills, though not so fast that it feels rushed, as he must still put in the effort to study and practice. This new world is a parallel one, which he uses to his advantage by introducing songs from our world as original compositions by him. While some may find this approach overused or too easy, I personally appreciate how he selects which songs to use and how these songs affect different characters in his family and the world around him. That's the main premise of the story without delving into spoilers or specific details. I'm not used to reviewing novel so I apologize if it's not well put I just wanted to encourage people to give it a chance despite any reservations they might have based on the synopsis.
(Although it may feel a little cringe to do I felt it helped the performance scenes a lot to listen to the music that he is performing while reading the scene as the author suggests.)

He acquires skills by learning the basics of a subject to a foundational level of understanding. Upon reaching this point, he gains a skill level that provides him with experience in that activity. For instance, after learning the basics of driving from his dad, he achieved Driving Mastery Level 1, granting him one month of driving practice/experience. The amount of experience gained increases at specific milestones within each skill.

Additionally, his system includes a status with stat points that categorize his current state, and if you know stat points you'll know it makes it easier and faster for him to improve and track his progress when doing activities/exercises that improve certain stats like weight training and running.