0,25/0,5 K8s

Fold River is correct but i would actually check the Turn and check/call and look what the river brings. I mean that play is not balanced because you always have some weak pair but that spot doesn't frequently occur and it's lowstakes where most people give a shit about balancing. Problem is that no better hand is folding and you're just ahead of 55 77 KQ etc but most of the times hes got QJs KJ AJ A9 AT AQ AK 66 etc. You are behind and often you'll get raised. THe question is whether he bets a worse hand on the Turn. Sometimes he could bet 55 77 or QTs and checks back on the River and you get 1:7,7 to call on your outs. Outs and the chance to be still ahead justifys the check/call i guess. Check/fold seems too weak somehow. Against a regular tag i think you can fold the River if he bets again. As played fold River is correct.