When I was developing the concept for Sisyphean Mansion, I was really deep into the Umineko rabbit hole, (well, kind of still am) so there are bound to be some similarities. And I think it's funny that "Yandere!Jack" scene was originally supposed to be much more yandere (as in actually yaandere) in the early concept, but then ended up being reshaped into what actually happens
Also, I don't usually like to give any hints about the mystery, but here I feel it's more misleading because this statue thing is a coding error, I'll have to fix that later, sorry for that
And I'm glad you're following along! It's always nice to read comments about Sisyphean Mansion