Board Thread:Questions and Answers/@comment-66.108.6.230-20150725190731/@comment-175.156.88.172-20150729090451

I'd think the 10~29 pattern is fine for wakis/tantous/uchis that 1) have reached toku 2) have all their stats maxed and 3) are within a few levels of each other. If you want to be safe you can arm them with shields and long-range troops. 10~29 kebiishi don't have troops anyway so you'd be quite safe if you equip your swords to be faster. I have not tried hunting kebiishi with any swords that haven't reached toku so I can't tell if it's easy or not.

If you're hunting for the kotetsu brothers, I see a lot of people got them from kebiishi in map 6-2. Map 6-2 is pretty good because you can have a wide level gap (about 15) and your swords should still be able to knock out the enemies in one shot, without losing any troops (you might lose about 3 troop hp overall, on average). Also the bridge is super long so there's lots of chances for kebiishi to spawn. If you have tantous/wakis trained up, it's the best place imho. Besides, you'll probably trigger kebiishi on that map grinding for akashi, so might as well make use of it.