Takemichi Fighting

I am new to Tokyo Revengers, recently started on recommendation from a friend. I am wondering if Takemichi learns how to fight? I have finished season 1 and started season 2. Im confused as his plan is to infiltrate a gang and become a main leader, but he never seems to learn to fight yet and is constantly getting the shit beaten out of him. I kept thinking he'd have a training arc but it hasn't happened. So does he learn to fight? I don't mind spoilers as it's a massive plot hole for me at the moment and I am curious as it makes no sense to me that someone weak would infiltrate and lead a gang.