roland the black silence showcase [sakura stand] 

have a great day
to get you need to talk to oliver in the dark alley then get the mask mask is like sukuna fingers they spwan in a player after that talk to the guy near the library then he will ask you to kill 10 players amd deal 500 dmg on standless then after that talk to the librarian near the cafe and he will give you a quest
collect 9 weapons
they will drop in certain boss
jotaro/dio
ranga workshop
altier logic
cristal altier
old boys workshop
toji
mook worshop
wheel industry
deku
zelcova workshop
durandal
allas workshop
to solve puzzle just go around the map
there alter way to get roland which is to summon roland boss raid it will spawn by chance using one for all stage 4 and yeah