Since I couldn't find any posts related to the items I thought I will show you all. I haven't used them myself during my playthroughs though, I guess no one did except the apples, clothes and the futa fruit in order to make progress in the game.....
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Anyway here they are, I tried to translate the descriptions shown in the game(I'm not good at translating kanji):
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It's VaginaFlower. It sucks up the bad fluids in your pussy.
As it says if Nona's cum bar is filled you can use this item to empty it. You will lose health during the process, if you don't remove the plant after the cum bar is empty your health will keep dropping till 1HP. The plant can't kill you! Your futa will still be erected! You can get grabbed by enemies during the process!
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It's SpermaWorm. I'll use it when I need a quick refresher.
You can use it to remove the erected futa but you can still get grabbed during fights........ You can also use it when the cum bar is full but it won't drain it. If you use the VaginaFlower after the SpermaWorm you will have a erected futa again.
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It's DildoWood, up there, you can use it when you're feeling harried.
You can use it anytime, with erected futa or not. If you have a erected futa you can also remove it by using it but during fights you will still get grabbed if enemies are close by.......
