How can I obtain Blade of Totsuka

[CodeC]

In Skybound Avatar dungeon (King's Palace) there is some puzzle with connected doors that I cannot seem to complete.

I got to boss' door but I left one chest I cannot seem to get bcs this connected doors.

Also I cannot enter into the left room with the two 2 blue items.

Someone who got the weapon and items could tell me what specific door I must take to get to them?

https://ibb.co/r2t0K6M

[Blunette]

If you clear the boss of that section, the illusions dissipate. Then you can go wherever you want unobstructed save for the enemy patrols after walking back in post-cutscene. You actually cannot get to the chest in the northeast corner without dispelling the illusions.

As a side note, the way to progress in that dungeon is to think backwards. Use Gallica to view the magla coming from the doors. Doors pointing to one another will remain linked, whilst doors that flow into a wall lead somewhere else in the zone. Generally, go travel eastward through the doors that point to walls and you'll make your way.