Cut the onion, carrot, cabbage, celery, and bell pepper into bite-sized pieces.
Heat olive oil in a pot and sauté the onion.
Add the carrot, celery, bell pepper, and cabbage and sauté for 2–3 more minutes.
Add water and bring to a boil.
When the vegetables are cooked, add the Japanese curry cubes and let them melt over low heat.
Once everything is well mixed, the dish is ready.