Coolex
I really hope that the Lifespan extension tool suggested by Orsted will awaken the dormant Laplace-Genes/Factor within Rudeus & his other Greyrat-Bloodline abilities. This should lead to Rudeus getting Laplace's Strong Physique, Lifespan & Demon-Eyes. From Greyrat-Genes, Rudeus should be able to activate & use his Touki to improve his Swordsmanhip.