3 years, 8 months.
In the aftermath of your brother creating a new before-bedtime-battle game using his toy weapons and armor, it was no surprise that this lead to more battle training downstairs in the living room during dinner prep.
Your brother let you choose your weapon: a small plastic sword.
He genuinely taught you how to attack him, despite the armor he was wearing.
You loved it!
You brother enjoyed having such a trainable little student as a soldier in training.
It was a good idea that he spent $10 of his allowance money on plastic at The Dollar Tree.