A week has passed since then.
During that time, my father took time off work to rigorously teach me swordsmanship.
The style I'm learning is called Yato-Ryu, a swordsmanship that my father describes as an attack-specialized style.
By "specialized," I mean that it has no defensive techniques, instead, it focuses on breaking through the opponent's defense and overpowering them from above. It's an extremely aggressive style of swordsmanship, clearly designed by someone who wanted to kill monsters as efficiently as possible.
But there's wisdom in the saying "the best defense is a good offense." Even though it's all about attacking, it can still lead to protecting oneself.
And since my resolution upon being reincarnated was to "kill before being killed," Yato-Ryu swordsmanship seems like a perfect fit for me.