Here is the step by step guide on how to become dragon of dojima.
Step 1 – Take Cigarette.
STEP 2 – Enter without knocking!
STEP 3 – Beat every scum in Kamurocho!
STEP 4 – Meet Majima-senpai!
STEP 5 – Beat Majima-senpai!
STEP 6 – Sometimes even Dragon must retreat!
STEP 7 – GO TO THE KARAOKE!
STEP 8 – Repeat STEP 4 & 5