Yakuza 6: The Song of Life

This refers to the overall level of the clan, which is raised through defeating the bosses that like to berate you in multiple cutscenes. Level 3 is obtained after beating the second boss, which can be fought as early as chapter 5. I had all the SSR characters, so every Clan Creator battle has been pretty easy. You will be at roughly 13 out of 16 missions completed once you unlock this, although I did every side mission before the second Clan Creator boss, so the number might vary slightly.