Thread:Berserkchart486/@comment-4080775-20150323190925/@comment-4080775-20150327043112

The reason is because Kana wants to get to know his wife's side of the family. I'll explain:

Kana Korimachi is the Husband of Naomi Senju. Naomi is the Sister of Harashima Senju. Tsunade is the Grand Daughter of Harashima. Sannoto is the Son of Tsunade.

Its confusing for me to know exactly they are related in terms of names, but I can probably figure it out.

Kana wants to meet him, as he has heard many stories of Sannoto and wants to get to know his family and such. Its a friendly sparring match, nothing serious.