Upon entering the garden to the Ghost House, Acarno has the option of participating in a secret boss fight – if he knows where to look.
The boss is none other than East Edge City’s own quizmaster; Siver Otakki. If you visited him on your last trip to East Edge you may remember him saying; “I have a feeling we’ll meet somewhere again today. Hee hee hee…”
Although this boss fight is not compulsory to your progress, it does offer some unique dialogue from Siver, who seemingly knows more about Acarno than his previous quiz questions would suggest – although the story behind this secret boss fight (and the “Detective” that Siver refers to before the fight) remains a mystery.
If you choose to take out Siver Otakki before entering the Ghost House it will help towards gaining a better rank on completing the Episode.
Strangely, if you do choose to kill Siver, he will appear unharmed upon your next return to East Edge in his usual location – offering some curious dialogue.