
The location of the ruins, as well as the five brothers is marked on the map to the left. The ruins look just like, well, ruins, as mostly all the houses in the area have fallen apart piece by piece. The place is littered with Ra'Jin followers, which are around level 15-16 2dot and will be some nice exp for those around the same level. You will also notice many named mobs scattered throughout the ruins, some of them are 3dot, and some of them are 2dot, but all around the same 15-16 levels. Of course, these five brothers don't seem to like the fact that they live in a village where all the houses are falling apart, so they've hid themselves inside the few remaining houses that are still intact. That is where you will find them hiding away. Kill all five brothers, their names are as followed:
Neckless Fujita
Gomi the Lightning Fist
Sakuraba, Hunter of Grace
Suko the Spectacle
Champion Yoshida the Golden.
They are all level 16 2dot mobs, and seem to always be up for your convenience.
After you manage to kill all 5 of the brothers, start making your way back to Pupil Gamurai.