Talk:Kikkou Sadamune/@comment-2604:6000:8C00:6600:71D3:E07D:A6B4:A52C-20180117081255/@comment-32903105-20180117082647

http://touken.7moe.com/sally_7_3.html

This site tells you the chance of swords dropping. Apparently it is 0.38% (1.76%) according to this site. Remember to x2 the percentage because of the campaign.