Apparently we have three Kamaitachi brothers…
妖仙獣 鎌参太刀 Yousenjuu Kamamitachi
Level 4 WIND Beast-Warrior Effect Monster
You can only use the (2) effect of “Yousenjuu Kamamitachi” once per turn.
(1) If this card is Normal Summoned: You can; immediately after this effect resolves, Normal Summon 1 “Yousenjuu” monster from your hand, except for “Yousenjuuu Kamamitachi”.
(2) When a “Yousenjuu” monster you control other than this one inflicts battle damage to your opponent: You can add 1 “Yousejuu” card from your Deck to your hand, except “Yousenjuu Kamamitachi”.
(3) During the End Phase, if this card was Normal Summoned during this turn: Return this card to the hand.
This is speculation but based on Kamamitachi and Kamitachi, we should be seeing a Kamanitachi. (I = 1, Mi = 3, and Ni = 2 for the sake of things here)