Wait for 「斬!!」 to appear, then tap the screen as quickly as you can to measure your reaction time. Tap too early and it counts as a mistake; react too late and the sword strikes you.
目标
React quickly when 「斬!!」 appears to set a time.
操作
Tap the screen when 「斬!!」 appears.
特色
Early taps count as mistakes, while late taps leave you struck.