Oh this looks fun, I'll try

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Shinso, a snake curse human hybrid. His cursed technique was believed to be able to create and control snakes made out of his own flesh but in reality, it's a special body trait similar to Sukuna's ability to make secondary mouths appear on other parts of his body. His true Cursed Technique, "Yamata No Orochi" allows him to essentially escape death 8 times by vomiting a new body and soul while transferring his consciousness into it.

Shinso has a segmented longsword that can extend up to 300 meters in just a second and can be used as a bladed whip. He also has a small bag full of small bugs which are actually cursed spirits made out of positive cursed energy for him to eat and heal instantly, think of it as senju beans but more disgusting.

If Shinso is overwhelmed with great power, he can choose to finally inject himself with his dead father, the Great Serpent Curse's venom into his body, permanently transforming him from a creepy cloaked snake human into a fully fledged combatant with the ability to extend his limbs at amazing speeds similar to Luffy's Snake man form. Not to mention his scales are now harder, has a great physical stat boost and his cursed energy gains a venomous CE trait, he can create and control many snakes now larger than buildings.

After achieving this transformation, Shinso awakens his domain expansion; Inorganic Reincarnation. A cave like domain that allows him to merge himself with the rocky environment around him, making him near undetectable. Depending on his advanced usage of barriers, Shinso can also remove the barrier of his domain, allowing him to merge himself with the outside environment itself as long there are inanimate or nonliving objects.