Okasan Securities does not appear to offer a demo account based on the available information. Demo accounts are an essential feature for new traders, allowing them to practice without risking real money. The absence of a demo account option may be a significant drawback for beginners who want to familiarize themselves with the trading platform and test different strategies in a risk-free environment. Traders who are interested in opening a demo account should directly contact Okasan Securities to inquire whether this option is available.