Talk:"Sengoku Swimsuit Scene"/@comment-113.210.3.168-20130805180448/@comment-14278353-20130805181250

If you let go, then you will encounter a tiger that is lower than your highest level tiger that you were fighting (the most recent). When you defeat this, you will get CP that is same as the level (e.g. lv 45 tiger = 45 CP), and you will get to find the highest level tiger (the most recent) again.

You let them go when you cannot defeat them, and don't want to wait for a long time. People let them go to farm their CPs from low level tigers.