Board Thread:Questions and Answers/@comment-27220610-20151115154518/@comment-28217929-20151115195027

Don't worry too much about your rate of progress, everyone has a different pace. Yaris and Iwatooshi will come to you sooner or later, they aren't as difficult to obtain compared to other rare swords imo. After your swords reach toku, remember to max their stats at the refinery and put them to work in internal affairs (fieldwork to increase survival + scouting). It also helps if you equip them with the right troops to compensate for certain stats, I usually prefer heavy cavalry, heavy infantry, elites, and shields.

As for Wakis and Tantous, they don't need to be part of your main team when trying to clear/grind world 4+5, so you can focus on training with your preferred team members. However, they are essential for getting through world 6. It's going to take some time and effort leveling them up but they shine during night/indoor battles whereas other sword types will suffer stat disadvantages.