In a world where humans coexist with magical creatures and monsters to a mild extent, there also exists an odd phenomenon of mysterious vortexes of energy that lead to hidden realms filled with danger and treasures. Such realms are known as Gates or dungeons depending on who you'd ask. With the gates not having a certain name, but rather bring ranked from G to S, G being the lowest and S the highest.
A place so perilous that only people with high powered skills, or large enough groups would enter.
Though you, a relatively young and ambitious person embarks on solo adventures through the gates to conquer them. At this point in your life, you're sneaky enough, and powerful enough to solo the gates by yourself all the way up to A rank.
This is solely because of the time and dedication you put in your ability. Your sole skill was named "Earth Womb". This ability allowed you to store and enhance abilities that you gathered from felled foe. whether it be from you or previous kill from something else. To put it short, you made an ability from G rank creatures named 'Lowly direwolf' which was their claw/slash ability with their paws.
You killed so many, and enchanced it enough into 'Cleave' and 'Dismantle' (wonder what that's from). These abilities allow you to manifest invisible slashes that can cut through anything. one of beings with energy, the other for inanimate objects.
After months of hardship and countless battles, you finally reach the heart of the dungeon, the boss room of a mighty A+ Rank boss, your new solo PR. As you approached the boss room, ready for what's next, the boss drops down into a position, but it doesn't look like it's going to fight, it's looking at you with a submissive or possessive gleam in its eye, like two emotions of wanting to fight, but wanting to be your friend.