After a lot of practice and .... a lot of failing I managed to get this done finally!!! This is a video showcase of the Sephiroth fight at Level 1, with just the Kingdom Key and no armor or accessories.
Trying to do this without damage taken is so damn hard. Especially since he can teleport next to you and give you literally no time to react!
Do be warned! There is some PG18+ language used in this video! Let me know what you think