Board Thread:Questions and Answers/@comment-139.195.8.216-20160213113702/@comment-25555896-20160213131055

The number of slots for armory in swords depends on their rarity. Currently, only 4 petals and above swords have the ability to equip all 3 slots. From their crest emblem, if they have black background or gold background like Nihongou , Mikazuki, will be able to have this ability.

Examples are Mikazuki (rarity of 5), Hotarumaru, Uguisumaru , Kousetsu Samonji , Ichigo , Tsurumaru ,  Hizamaru ,  Higekiri ,  Nihongou. (with rarity of 4)