A famous katana said to have cut down a lightning strike. It is featured in legends from the land of Wa, which vanished centuries ago. The charge that remains within its blade adds a lightning effect to its attack.
FFIVTAY Boltslicer is a mid-ranked Katana usable by all of the ninjas in the game, which provides 35 Attack, 40% Accuracy, +5 Strength, and is Lightning-elemental. It can be obtained by finding it in Eblan during the final chapter or by winning it from Blast Golem.
BD Raikiri is a low to mid-ranked Katana that provides 32 P. Attack, 90 Aim, 15 Critical, is Lightning-elemental, and makes the wielder immune to Lightning-elemetnal damage. It can be obtained by by finding it on B29 of the Engine Room.
Raikiri literally translate to Lightning Cutter.