It's not random. "Up" for boobjob and "down" for handjob.
They cannot be switched without cancelling, while the pose of reacting double Lisa can be so by pressing "left" and "right", to switch between 2 kinds of boobjobs and 1 fxxk+kiss.
Ah yes, the switching are only for non fighting case. It won't work on boss fight.
Oh, wow, you're right. I didn't know Up vs Down could have different scenes. Thanks. So now the only scene that can't be accessed outside the fight, is the post fight victory kissing paizuri scene, that's fine.
Also, something I've noticed. The scene where the magic clone shows up and it looks like you're banging the one with its legs raised, while the other is kissing. But you're actually doing paizuri to the kissing succubus and nothing to the one with its legs raised. Lisa mentions that the clone's body is linked to hers (magically). So when you finish from the kissing one's paizuri, you can see the semen from the kissing clone's boobs magically transfer to the other clone's boobs when you finish. Plus as he pulls out, you can see her boobs moving with the motion of him withdrawing.
I definitely paid way too much attention to that character, but she's my favorite.
Edit: Also, incidentally, I found the one version of Lisa that doesn't spawn the clone to interrupt the scene. This bug might be fixed in newer versions of the game, but If you go to the "Hut on the Plateau", Lisa is there and if you press "Up" on her, she does the kiss paizuri and it goes infinite with semen difference. The clone never spawns. It also breaks your game lol. There's no way to end the scene and you have to close the game to fix it. But I found it, finally wooo!