This should be the first branched off path ending you go for. The map below shows all the paths. In order to get to a new path you have to get a three star ranking on certain stages that branch out, I will specify these stages for each trophy. Getting three stars on stages that don't branch out get you nothing special/won't ruin the path for whatever ending you're going for.
So for the previous trophy Idle Oni you should have went to the fallowing stages 1-A, 2-A, 3-A, 4-A, 5-A and 6-A. So now for this one you still want to go through 1-A, 2-A and 3-A but when you get to 4-A what you want to do is try beating the stage as fast as possible while taking as little damage as possible in order to get a three star ranking at the end of the stage so instead of going to 5-A you'll go to 5-B. From there you should continue with 6-B and 7-A to get your second ending.
The map above can be accessed in-game by pressing and then pressing "Stage Tree". Stages you have completed will green, stages you haven't been to yet will be grey and the stage you are currently on will be red. The bright green trail shows your current path. So if you ever get confused as to what stage you're on are what path you took, you can check without having to quit. The map also pops up for a brief second at the start of each stage.