Tensura/Ruin

A legend built on ruin, ended upon death and remembered for eons to come. The Demon Lord Zepar, an ancient entity thought of as the living and breathing personification of the inevitable end to come once brought to heel returns again. Or perhaps, he had never truly been gone for his truth was one seldom accepted and simply sought an out. The truth that he was simply a wayward soul brought into a foreign world following an untimely demise and did what he thought was best, seek power unmatched to attain luxuries he'd never had once given the chance. Who could truly say they wouldn't? But now, stirred from his respite by forces unknown, the demon lord cum humble adventurer realises that he can no longer spend his days simply idling and practising his hobbies. Will his sense of self-preservation triumph over his desire to procrastinate? "Eh? What's with that setting? Why do they make it seem like I'm the last boss?" - I'll clarify, this does not show you the journey of him acquiring power in it's entirety but is instead set in the era of Rimuru Tempest. I've tried to make the basis as sensible as possible but if it irks you even then, I apologise. The Main Character Lev/Zepar is someone who transmigrated into Tensura with several unique skills that he employed to evolve himself before his 'demise'.