Kendo, as a traditional Japanese martial art, primarily focuses on developing discipline, character, and physical and mental skills through the practice of swordsmanship. While kendo does involve striking techniques and teaches principles of combat, it is important to understand that its effectiveness as a self-defense system is somewhat limited in a modern self-defense context. Here are a few reasons why:

1. Weapon Focus: Kendo training revolves around the use of bamboo swords (shinai) and protective armor (bogu). The techniques and strategies are tailored specifically for this context, which may not directly translate to unarmed self-defense situations.
2. Lack of Unarmed Techniques: Kendo primarily teaches sword techniques and does not extensively cover unarmed combat, grappling, or self-defense techniques against non-bladed weapons or multiple opponents.
3. Rule-Bound Environment: Kendo practice adheres to strict rules and regulations for safety and fairness. Strikes are limited to specific target areas, and practitioners are expected to show respect and adhere to etiquette. These constraints may not fully align with the unpredictable and unrestricted nature of real-life self-defense scenarios.
4. Legal Implications: The use of any weapon, including a sword, in a self-defense situation can have severe legal consequences in many jurisdictions. It is important to be aware of and comply with local laws regarding self-defense and weapon use.

While kendo may not be a comprehensive self-defense system, it can indirectly contribute to self-defense by improving physical fitness, mental focus, and discipline. The training may instill confidence, enhance situational awareness, and promote a calm and composed mindset in potentially confrontational situations. However, it is advisable to complement kendo training with other forms of self-defense training that cover a broader range of scenarios and techniques, including unarmed combat and self-defense strategies specific to your environment.