I Transform into an Evil Witch, Specializing in Magical Girls

[Protagonist gender change + witch + magical girl + villain + defeat penalty] Zhou Meng had just completed a time travel. He was supposed to be returning happily and safely with his three companions, but he encountered an unexpected incident. When he woke up, he found that he had arrived in a magical world. O most evil man! Make a contract with me and work together to overthrow the rule of magical girls! What a joke, I, Zhou Meng, only like to hang out with girls, how can I have anything to do with the most evil thing? But the voice outside did not allow her to think too much: "Listen to the witch inside, you have been surrounded. I can't help but let you live!" Zhou Meng looked at himself in confusion—— Me? Witch? ? But I'm just an ordinary person who wants to go home! As a last resort, Zhou Meng could only agree to transform into a witch and embark on the road to find partners and try to go home alone. At the same time, he did not forget to help the lovely magical girls trigger the punishment of defeat. … However, when faced with his former companions who had lost their memory and had power disorders in the magical girl camp, Zhou Meng put aside her "nature" as a witch and chose to face it coldly - Even if I am the enemy of the whole world, I will heal you. Then let's... Go home together!