I'm a little reluctant to use "Chamber of Tetsuko" as the display title because it's just English for part of the subtitle, not the whole thing. Same with the "Clockwork" on #15.
I've kind of idly wondered for a while if Hizumi Jigoku would be better, since the title is really ヒズミ
天国 with 天国 struck out, and ヒズミ
天国 = 歪み地獄 = "overdrive hell." But the catalog stems are HZM
T- so whatever.
There is one official mention of "Hizumi Heaven" for #13, but Hosoe's English is not very good and it shows even in that post.