Ichiran Ramen Dotonbori - South Building is a must-visit spot for solo ramen lovers in Osaka. Specializing in personalized tonkotsu ramen, this popular chain lets you customize your bowl to your heart's content - from noodle firmness to toppings galore. The unique dining experience of slurping in solitude at your own booth adds an extra touch of fun. Just be prepared for long queues, especially in the bustling Dotombori area. If you're willing to wait, it's definitely worth the savory satisfaction!