Cause no it's not really customisable: you don't get to choose what goes into your tendon, not entirely at least. You don't get to pick a bowl full of chicken tempura if you don't like greens, nor do you get to spam sweet potato tempura if you're as big a fan as I am. What you get is a choice of sorts, between prawn/chicken/all greens; rice/udon/soba; and a sauce, spicy or not.

But that doesn't mean it ain't good. The batter here was thinner than what I had at Tendon Kohaku (though oilier), chicken as tender and juicy, and oooh that 🌶 level 3 sauce is so addictive. Doesn't seem all that devilish at the first bite, but mind you it creeps up - so if you can't take spice, stick to level 1 or 2, it'll suffice.