He can copy abilities (kind of like Kise from Kuroko no Basket) as long as he touches the person. I believe he can keep a maximum of four at a time, but uses them in pretty interesting ways. Eventually, he becomes a zombie king (the novel!MYF also becomes the zombie king, and they were both surprised that there were two in existence), allowing him to control all zombies regardless of their level.
One time, he went out on a mission to get a gold gun for ML's grandfather but took a detour to go to a s*x store. He loaded his bags with a bunch of condoms, lube, toys, videos, etc. He got caught red-handed by ML's team, and their reaction was, "We went out to search for supplies while you went out to find condoms!" Mu Yifan was really eager to use those condoms when he went home. Unfortunately, the ML had to go somewhere, so Mu Yifan blew balloons out of the condoms and left messages in them for the ML to see once he came back.
They have a lot of s*xy times in ML's space since time flows differently there, allowing them to spend more time with each other. During their first time, I think, ML placed tape on Mu Yifan's mouth to kiss him in order to avoid spreading the zombie virus. Outside, they kiss each other on the face a lot.
There's another character who is a friend of Mu Yifan, both in real life and in the novel, who became a zombie when Mu Yifan accidentally scratched him. At the time, he was not able to control the zombie virus within his body, and this small scratch caused the friend to turn into a zombie. The friend lost consciousness and ate his mother and father in addition to another friend's mother, who worked for the former.
So after novel!MYF was defeated, everyone spent their times developing their newly inhabited city. One of ML's friends, who is a doctor, did a lot of research to create an antidote for those who became zombies. It was successful, but Mu Yifan's recovery took much longer because he was a zombie king. During the time when he was in the hospital, ML was doing other things, such as planning their wedding. They were so happy that they actually forgot that Mu Yifan had bone cancer. As a zombie, the cancer merely halted. In addition to this, during the final battle, Mu Yifan lost some limbs, which regenerated, and the affected leg returned back to its original, normal appearance. During their wedding, he felt pain in that leg and eventually fainted because of the intensity. ML's doctor friend stated that Mu Yifan could not live for much longer because he entered the last stage of cancer. What was extremely sad was that every time Mu Yifan went to sleep, the ML was anxious over the fact that he may have died. They spent their last days together traveling around. When Mu Yifan died, ML cried a lot. He would bring his lover's corpse to watch the sunset together.
Luo Wei's life gets shortened due to the gruesome rape and violence he went through. Despite that and Luo Wei's bloody reputation, Wei Lan sticks by him and helps him heal. They end up escaping for a couple years to Wei Lan's hometown after Luo Wei was rescued from being held hostage. We can see a glimpse of what a happy life means to them. Completely ordinary but happy life. However, Long Xuan finds them and wants to separate them due to jealously and take Luo Wei for himself. He caused Wei Lan to forget about Luo Wei using this memory-wiping medicine and marry someone else. The author did such a great job for making me like and dislike a character at the same time. I hate Long Xuan for separating the couple, but his pain from being unable to capture Luo Wei's love is pretty sad. Long Xuan strongly believes that even though he made Luo Wei go through all this pain, as emperor, he could give Luo Wei happiness. Twisted way of loving, really. However, Luo Wei still misses Wei Lan and rejects Long Xuan during every interaction. 10 years later, Luo Wei eventually dies from a stab wound (although he was already at death's door due to heart disease). He requests that he sees Wei Lan from his older brother, who was bringing him home, but stops outside his house and watches Wei Lan being happy with his family before dying. He didn't want Wei Lan to remember him when his life was already short and when Wei Lan already had a family to take care of. Long Xuan cries as he watches Luo Wei get taken away and later comes to Grand Priest Fu Yi ("living Buddha") that he wants to exchange a hundred years of his loneliness (in description) so that Luo Wei would only experience joy in his next life. He was willing to take on the weight of Luo Wei's sins. As for Wei Lan, 20 years after Luo Wei died, his grandson reminded him of the words Luo Wei used to form the characters of his name when he was first rescued. He kept on asking, "Who said this to me? I can't remember, but I know this person was important." He became ill, and dreamt of Luo Wei and their house. He died due to the illness worsening, and his wife gave back a piece of jade that Luo Wei gave to her to him. The the jade was part of a pair that were were originally worn by Luo Wei and Wei Lan, and it commemorated their relationship. She loved Wei Lan, but she knew in her heart that she was part of the reason the two couldn't be together (she was always afraid of Wei Lan remembering Luo Wei). She sent Wei Lan off, telling him that Luo Wei was waiting for him. She requested that the two were buried together back in Wei Lan's hometown. Eventually, the two of them got reincarnated and ended up together in their third life.
As stated in the summary, he leaves these shackles behind and decides to take all of his savings and spend them on anything he could think of. One of which is s*x. Hahaha. He regrets that he was never really intimate with anyone and hires ML, who was drunk at the time and stumbled upon MC's hotel room, to be his lover for a month. ML finds that MC was quite interesting. MC seems conservative but at the same time, quite wild. One of the first things that MC asks for was to go skydiving! LOL. Later on, MC and ML go to Las Vegas. Normally, the routine would be MC making the request to go to certain places and ML would comply to them. MC makes it a secret that he is going to a strip club and gets ML really jealous. I think MC was going to throw money at the boys on stage, but ML stops him, saying something along the lines of "You have me in front of you. I am better than those boys!" Even after leaving, MC is still thinking about touching their bodies. When ML stopped him, one of the boys called him onto the stage, but ML took MC away. ML was like, "You're still thinking about them, aren't you?"
There are sweet moments though. MC truly wants to be with someone he loves and keeps thinking how he hoped that was true in his next life. When they went to Las Vegas, MC asks to go to the marriage office to get a certificate. He wants to have it to look at when he flies back home. He wants to have it cremated with him when he dies... When he sleeps, he would get nightmares about being ridiculed for liking men, and cries, which distresses the ML. ML wants to get closer to MC, but MC wants to keep some distance because I think he doesn't believe that ML really likes him. MC thinks that ML is only keeping up the image of a lover because he paid him off (but ML is already rich.)
There are aspects of her that are confusing/contradicting. She is afraid of ghosts (first arc, she mumbles to encourage herself), but not death. At least, she thought of it foremost. She didn't think, "Oh man, I am going to die (since I have never done this before)." Even though the MC died in her previous life due to getting stabbed, she is too calm and confident, which I am not sure where it came from. For example, when she was inflicted by the death curse, she proceeded in finding Ann without showing fear of dying. It is as though dying once made her immune to the idea of her dying. I would think that if one had another chance to live, he or she would generally be more careful and more afraid to lose it a second time. Although the event itself was a death flag, and by saving Ann, she supposedly would save her own life, it still felt like she did not put too much thought into her actions.
What I am trying to say is that I want to see some hesitation and inner struggles that are inherent in human beings, especially for a modern person, when it comes to death. This is even more true because the novel is mostly in first person. The lack of these aspects make her less relatable to the reader in my opinion. Towards the end of the first arc, she used a wand to switch places with Ann, who was about to get possessed by the so-called antagonist. I just find it hard to believe that she was willing to risk her life for someone she met for only a day. But I guess, in her head, she's thinking that she'll just die either way. If she doesn't save Ann, Ann gets possessed, and she'll die like in the original storyline. But if she goes to save Ann, she'll die in the process. Complex thoughts like this *should* be shown. It makes the MC feel more real. Honestly, cannot clearly say whether or not I like her.
Not to mention, we do not know who *she* really is. Sure, she is "Erica, " but who is she really? What is her real name? That's one of my main concerns in isekai/transmigration novels is that the background of the MC, not the character they get turned into, is not fully explored. Her past can help to explain some of her actions. The author might as well made the otome game world a real, fantasy world that this novel is based out of. The significance of the world being based out of an otome game is that the MC has the advantage of knowing her death flags, but this novel could still work without the reincarnation aspect. For example, "Erica" could have foresight or even a fragmented version or something like that to allow her to vaguely see what will happen in the future. Because the way that the novel is now, I actually do not care much about the otome game characters because I subconsciously separate the MC from the rest of the cast as real and fake people.