Like Weapon Bash or Hasso, this Job Ability requires a two-handed weapon.
Ninjutsu, song, and magic casting and recast times are increased by 50% while Seigan is up.
Seigan works in conjunction with Third Eye to act in a similar manner to the Utsusemi series of Ninjutsu. A monster's attack can either be evaded (anticipated) or counter-attacked. Each time a Samurai evades or counters with Seigan/Third Eye, there will be a chance that Third Eye will cancel. The longer Third Eye has been active, the higher chance of cancellation.