Community counterplay
Sidestep note
As Yoshimitsu against Heihachi, sidestep right against d+1,2 (Hammer Beating), then punish with SS2.
Source: YouTube: All Strings you can sidestep against Heihachi
These notes are public community matchup references. Verify details after Tekken 8 patches.
Related answers
On the first blocked df+1, sidestep right to beat the common blue-spark follow-up. After showing it, expect him to vary follow-ups or delay.
Source: TekkenDocs
As Yoshimitsu against Heihachi, step the sequence against 1,2,2~1,1+2 (Demon Executioner Volley), then punish with FF3 kincho B2 1.
Source: YouTube: All Strings you can sidestep against Heihachi
As Yoshimitsu against Heihachi, sidewalk left against 1,2,2~1,1+2 (Demon Executioner Volley), then punish with FF3 kincho B2 1.
Source: YouTube: All Strings you can sidestep against Heihachi
As Yoshimitsu against Heihachi, sidewalk left against 1,b+2,4 (Demon Lair), then punish with UF1 kincho B2 1.
Source: YouTube: All Strings you can sidestep against Heihachi
As Yoshimitsu against Heihachi, sidestep or sidewalk either direction against df+1,2 (Muso Tekken), then punish with kincho E.
Source: YouTube: All Strings you can sidestep against Heihachi