Board Thread:Questions and Answers/@comment-24678498-20150803190233/@comment-26093926-20150805173636

Yo~!

Tantous and wakizashi (but especially tantous) are switched out for Uchigatanas, Tachi and Oodachis from this stage onwards. Tantou and Wakizashi have lower defense stats and sometimes do not deal enough damage to take down the enemy.

For Tachi and Oodachi levels, take atleast Toku and refine them as much as possible. Tachi and uchigatanas can substitute each other. Take up to 1 or 2 oodachis if possible but this is optional. You can save your tantous and wakizashis for world 6 where they'll have a major advantage in night battles