To learn イトヲカシ - さいごまで chords, focus on the sequence of these chords: Bb, Gm, Eb, Ab, Bb, Eb, Ab and Bb. I suggest starting at a calm pace of 46 BPM, and as you gain confidence, approach the song's BPM of 92. Considering the song's key of Eb Major, position your capo to suit your vocal and chord preferences.