I was farming in the Tree of Life, looking for a secret boss. None of the towers were lit cause I didn't talk to the Samoorai yet. After I did, I used a teleporter to have a shortcut. But I used the wrong ones and ended up near the towers next to the Haneki spiders. I got caught in battle between them then I backed up when it was completed, all the way to that tower's door. Then, somehow, I entered it. I was introduced by the Youkai Rank 10 Life boss, then I thought: "But the tower wasn't lit..." Can someone please explain this?
There are 2 secret bosses in the Tree of Life, Youkai is one and the other if you look at the map in your log book. is the first house to the left. Neither of those are lit. I have done them both and I am sorry to say, I can't remember the name of the first one. I believe though that it is Akuji or something similar. Youkai's house is the one located in the upper left corner of the map.