The Soul Cube is a powerful treasure that can help its owner absorb and refine the souls of other beings. I adapt it to Bleach Universe.
Soul Absorption: The Soul Cube can absorb the souls of other beings and store them within the cube. The souls can then be refined and used to increase the owner's strength.
Soul Refinement: The Soul Cube can refine the souls within it, purifying them and removing any impurities or negative emotions. This process can greatly increase the power of the refined souls.
Soul Fusion: The owner of the Soul Cube can merge the refined souls within the cube with their own soul, gaining the knowledge, experience, and abilities of the souls they have absorbed. This can greatly enhance the owner's strength and understanding of martial arts.
Soul Attack: The Soul Cube can also release the souls it has absorbed in the form of a powerful attack. This attack can cause great damage to enemies and disrupt their souls, making them easier to defeat in battle.
FYI, the soul cube can refine the soul of it's wielder into an eternal soul, the key to eternal life.
Although in the original series it requires the cultivation method, yes, it is the key for eternal life.
@IWriteFanfic Yeah, it's been a couple of years since I read MW so I forgot entirely about that life guy and his death wife.
Edit: In fact, I'm remembering a lot of things now that I am reading your ffs, so I hereby thank you for making feel like I'm reading one of my favourite novels of all time all over again.
@order69 Haha! It is one of my favs too! I am glad you enjoy it!
Finally. Someone using things from Martial World. Thank you my good sir.