According to the information I've searched for, it belongs to a branch of the ICHIBANYA CO., LTD. -- CoCo Curry House. It's expensive, but it can prepare your curry according to your special order.
We have a few here in Hawaii too, everytime I'm on Oahu I eat there. Its actually not that expensive here, $5.75 for a beef curry.
Spice level 6~10 +100yen
Only for those who have conquered Spice level 5!
Level 6 --- 13 times as spicy as level 1
Level 7 --- 14 times as spicy as level 1
Level 8 --- 16 times as spicy as level 1
Level 9 --- 18 times as spicy as level 1
Level 10 --- 24 times as spicy as level 1
Conflagration in mouth!Spice level 5 +100yen
The hotness from another world!
Twelve times as spicy as that of Spice level 1!!Spice level 4 +80yen
As spicy as the "truly super very hot" curry available on market!
Six times as spicy as that of Spice level 1!Spice level 1 +20yen
As spicy as the typical "spicy" curry available on market!
Choose this if you want some stimulation! Smile~The world... has changed!!WATER! WATER!!Spice level 3 +60yen
As spicy as the "truly very hot" curry available on market!
Four times as spicy as that of Spice level 1!Hmm? Too harsh?Spice level 2 +40yen
As spicy as the typical "very hot" curry available on market!
Twice as spicy as that of Spice level 1!Still alright yu!Want some water?It's no big deal yu!Regular spiced
The "ordinary" one. Mild
For children or people not accustomed to spicy food.Quantity of a quarter is also provided!!+100Yen for each addition of extra 100g rice
+120Yen for beef curryAbout one-and-a-half small bowl servingAbout 2 small bowl servingsAbout 1 rice bowl servingReducedExtraStandardDescription of the quantity and the spiciness of the curry!Quantity of rice!!