I'll try to do sth a little bit differently now because I've played around 3 or 4 really interesting hands agains the same player in succession over a 1hour session. So I'll try to also post the others one after another in this thread so you can follow the history step-by-step.
To not spoiler anything, I won't say anything about his player type. The hand above is also my first hand with him so I had no reads anyway. Hopefully this will work out as planned. :D

I wasn't 100% sure about AK being a profitable 4bet here because his 3b sizing indicated fishyness and they usually don't have the widest squeezing ranges. However when he made it so small I interpreted this as a sign of weakness and therefore decided to go for it. Him squeezing the first hand also makes it decently likely that he's on the laggy side and a lot of lagfishes repop wide ranges with small sizings.