Replying...
Intro. (You have the System Menu, becoming a "Player", from the anime Solo Leveling, which will make you stronger through Exp levels and improving attributes and Exp levels of your skills and passive abilities, and do missions and secondary missions and daily missions, such as physical exercises, and with each victory and combat you face, you will gain more powers and attribute points/statistics to improve your attributes which are: strength, intelligence, perception, vitality (life/HP), and agility. As if it were a game. Also, the System Menu may give you a quest called: "class change" , where you can unlock and acquire new powers and abilities and passive abilities. The system menu also has: "titles" , which can give you extra attribute power buffs, and you can acquire them after doing a mission or defeating an opponent or monster/creature, and depending on the opponent and creature, you will gain a specific title.)

Solo Leveling.

@Josniel Victor