Board Thread:Questions and Answers/@comment-116.15.135.247-20170121120240/@comment-27006696-20170121130913

There is no need to wait for your tantous to reach level 99 for you to send them to kiwame training. They will come back stronger, at least stat wise. I've never seen a lvl 1 kiwame in action, since my tantous were way past lvl 60 when I sent them to kiwame, but lvl 30 kiwame tantous are pretty strong. I don't think there should be any problems, specially if you intend to take them to map 6 after they come back, since they are all night battles. Kebiishi in night battles are super easy to deal with in a team with mostly tantous/waki ;)

I'd say, kiwame you sayo and see for yourself how he fares in those battles and then decide if you want to send the others. But I doubt they'll come back weaker.