You get to this river with absolutely no hands that need to bluff.

So you are so rarely paid here that vbeting 55 is probably bad. I would probably bet TT since he can have 55 also to call but to be v technical I think KT should be your only river vbets.

Interesting spot nevertheless. I wonder if anyone would turn AK into a bluff since you block nut boats and you are at the bottom of your range. I think you would need to have this as a bluff in order to vbet all boats.

i will still value bet the river actually.

Don't like raising flop and I don't like your sizing OTT.

I like the flop raise on a board this dynamic as you have position and will still have a lot of good hands regardless of run-out.

I'd size smaller on the turn, so you can value-bet wider and bet the river and adjust from there if he isn't calling any flush or King-blockers.

I would expect Villain to open shove any boat that beats you, you have plenty of flushes and trip K's in your range as played so I'm pretty sure he has AK here a huge amount of the time and isn't folding when you bet 1/2 pot.