Doing this Dagda's Cauldron quest and I don't remember Tennozu, if I've ever been there. Help? --- "Hate the sin, love the sinner. But sometimes it's hard to look past all that sin and find the person behind it." -Joshua Graham; Fallout: NV
Head east from Shibuya until you find Tokyo Tower. There will be an entry point there that is a tunnel and asks if you want to head to the bay area. Go through and Tennouzu will be somewhere on that side. Don't remember the exact location from there but really, there's only two paths.