Can You Explain The Ending Of 'Tickle Talk 101'?

Here come the final book in the tales of a gay man series as in the last 2 books some of these are true and some are fantasy

Father is a seven-tailed white fox, and Mother is a five-tailed flame fox. By all logic, with those two rolling the genetic dice, the worst child they could get should be a six-tailed fox. But Mother has given birth nine times, and each baby is a single-tailed earth fox. The two of them think their cultivation simply isn't strong enough, so they train even harder. The truth is, every child Mother has given birth to is a nine-tailed fox. It's just that Father's subordinate, Oscar Brown, switches them at birth and strangles them to death. I'm the unlucky idiot who's died nine times. By the tenth time, I cry and scream that I'm done. The Heavenly Way is so sick of me kicking up a fuss that they say they'll help me solve the problem. I expect them to just strike Oscar and those fox cubs with divine lightning. Instead, they grant Father the ability to perfectly comprehend baby language. When I open my eyes again, Mother is crying to Father while holding a scrawny, dark-furred earth fox. "Darling, it's all my fault. Our child only has one tail again." Meanwhile, Oscar has hidden me in his sleeve. He's about to take me away to be disposed of. In my panic, I shout in my mind, [Father, save me! Your subordinate switched me! I'm in his sleeve!] Father, who is gently comforting Mother, freezes. He looks toward Oscar, who looks shifty, and says, "Stop right there. What's that in your sleeve?"

Jo and Jane are a couple who are quite famous among the artist club. He fell in love for the first time to a girl from ordinary circles who in fact was one of the talents who pursued a career in his company. Their love story that is so fragile on two different worlds requires them to separate each other. But it was Jane who suffered alone a lot, obviously Jo's family finally got rid of Jane in secret, Jane's whereabouts disappeared, whether she was alive or dead, Jo didn't know where she was. It made Jo live in deep misery and longing. He has drastically changed into a cruel cold man over the past 4 years. Until the 5th year destiny said otherwise, Jo overhears a woman's voice talking to Steven, his best friend since childhood. That is a familiar voice, exactly the same as the voice of someone he may have longed for. It suddenly made Jo shocked and for a moment was silent at the outer door of the room. Is that Jane? Or only the same voice of other person? Is Jane still alive? If true, why has Jane's whereabouts not been known for the last 5 years? Why didn't she ask for help or call Jo? What really happened?

The third time I caught my wife in bed with another man, I lost the ability to speak. Out of guilt, Helena spent a month teaching me to communicate with one and two. One meant yes. Two meant no. Whatever Helena said to me, if it had anything to do with Felix Danner, the answer was always one. She said Felix was in poor health and wanted to borrow the protective locket my mother left me. I answered one without hesitating. She wanted to push back our anniversary so Felix could have his birthday first. One. Even when she wanted to move the injured Felix into our house, I still answered one. And I packed my things and gave up the primary bedroom for him. Then I took our wedding portrait down off the wall. Her eyes filled and she caught my hand and wouldn't let go. "Simon, you told me that portrait never comes down unless we're divorced. Are you telling me you want a divorce?" She saw the one already forming on my mouth. Helena came apart and started screaming at me. "Simon, don't you dare say one. There is nothing wrong with your vocal cords. You can talk. So talk to me!" A second later, afraid she'd frightened me, she gentled her voice. "Simon. Say two. Please say two." I pulled my hand free and looked at her, honestly puzzled. Had she forgotten what she signed the year she loved me most? Two chances if she was ever unfaithful. A third time, and the filing instructions and settlement went into effect on their own. They'd gone into effect a month earlier.

I have a severe case of logorrhea. Only speaking makes me feel alive. My classmates all call me a freak, but Marvin Britt is the only one willing to listen to me. One day, I bring some homemade soup over to see him, only to catch him holding his junior's hand. "Lexie, your voice is so lovely, unlike my wife at home. She sounds like a squawking duck. It's exhausting." My hands shake so violently that I drop the thermal flask. The commotion angers a nearby madman, who forces a bottle of boiling water down my throat. With my mouth full of blood and blisters, I realize I need proof. I send Marvin—a lawyer—a frantic voice note to accompany me to the police station for evidence. Marvin shoots back a single word—"Noted". Of course. He doesn't even listen to it, as usual. He used to reply to everything I said with voice notes at least a minute long. But we hit the seven-year itch, and he's sick of my endless talking. Leaving the hospital, I stare at my diagnosis of permanent mutism and laugh bitterly. He must be thrilled. His world is finally quiet.

When I was six years old, I became an actual dummy after playing a silly game with my older sister, Hannah Hubbard. My mental age is stuck at six years old. Because of that, my grandma receives a huge shock, causing her condition to deteriorate. Since then, Hannah has completely transformed into a brand new person. Thanks to her scholarship and her efforts to collect and sell trash, Grandma and I are able to survive under her care. Hannah is such a prideful person, and yet when her classmates call her stupid nicknames, she doesn't get mad at them at all. But if anyone is to call me an idiot, Hannah will seek justice for me no matter what. That night, Hannah gathers me in her arms while crying soundlessly. "My Oliver isn't an idiot at all. You just haven't grown up yet. Oliver, promise me that you will never leave me, okay?" I just nod blankly. For the next three years, I cling to her like glue. That is, until Blake Mueller appears in our lives. When I'm done playing with the mud, I forget to wash my hands, so I accidentally soil Blake's white shirt with my soiled hands. That's when Hannah suddenly breaks down emotionally and kicks me out of the house. "Oliver Hubbard, you've dragged me down my whole life! Are you going to cause trouble for Blake as well? Can you please be more understanding and stop causing more trouble for me?" Finally, an idea sparks inside my dim-witted brain for once. It turns out that my existence brings nothing but misery to Hannah. So, I hide inside the casket Grandma has custom-ordered for herself. There, I close my eyes and begin counting down quietly. Three, two, one. Let the game begin.