To jam and learn Janne Da Arc - 月光花 chords, your primary focus should be mastering these chords sequence: Bm, A, G, Bm, F#, Bm, G and F#. Start with a comfortable 51 BPM and as you become proficient, aim for the song's BPM of 102. With the song's key of B Minor, set your capo to fit your vocal range and chord choice.