Chain Issen only starts from a True Issen (attack button a fraction of a second before an enemy strike hits you). It does not start from a parry, dodge, or stamina-break execution. Nearby enemies must exist. In the demo many players cap at 3 hits, and the last one often goes cinematic and ends the chain. Bosses generally cannot be chained this way.

1Step-by-Step

2Key Decisions

True Issen vs Break Issen
Use True Issen for the chain
If you emptied a stamina bar and got a prompt execution, that is Break Issen. You can sometimes chain those only when multiple enemies are already staggered. The multi-target dance players want comes from the timed counter Issen.
Press timing
Press on the flash, not on instinct
Look for the bright slash or white line, then the red dot on the next body. Pressing by feel alone is why people think it is gone.
Difficulty choice
Story difficulty for learning
The Issen window is wider on the easier setting. Use that if you are still learning the first hit.
In-game Tips menu
Pause and check the clip
The in-game Tips menu has a short video of Chain Issen. Watch it if the flash cue still is not clicking.

Fight Demonstration

Common Mistakes to Avoid