I am a Godkilling Archangel

Lucifer, a battle maniac archangel who despises defeat, spends his days engrossed in combat. In the midst of his showdown with the demon Satan, he is suddenly betrayed by his comrades and thrust into a future era where demons and humans coexist. Stripped of everything, including his powers, Lucifer undergoes a transformation, discovering he can replicate the abilities of his vanquished adversaries. Recognizing this newfound power, Lucifer embarks on a quest to confront increasingly formidable foes.