Do All the Writers Save the Protagonist?

(Copywriting) I am a person from a high-dimensional world As you can see, I stayed in this boring low-dimensional world for a long, long time, so long that I lost track of time. When I first traveled through time, it was still the Demon Slayer era, and to this day, I am still alive. Of course, I didn't participate in the Demon Slayer's actions, I just took action and saved the Demon Slayer by the way. Although it was revealed that I come from a high-dimensional world, people in the low-dimensional world seem to be too stupid to figure out my name. Is this the law that all supporting characters must give way before the protagonist comes out? (Shocking. However, I also lost that damn freedom and have been transferred to various official offices to "protect my safety". But there is a magician among the officials! But it's a pity that the Son of God hasn't appeared yet. Until today, I discovered that the world is full of literary giants. It seems to be getting interesting! [Ding——After achieving the achievement, tell Chuuya whether he will grow taller wearing a hat indoors] [Ding——After achieving the achievement, tell Atsushi "You are great" before he meets the Armed Detective Agency] [Ding--After achieving the achievement, you can see Kunikida Mima's mate selection criteria] [Ding - Achieve the achievement "encounter" Russian special rice balls and the naughty Mr. Magician] [Ding--Achieved the achievement and successfully persuaded Oda Tonosuke to become Oda Sakunosuke] [Ding - Achieve the achievement and meet Jiu Zuo before his super power explodes] [Ding——Achieve the achievement and meet Ms. Yosano before going to the battlefield] [Ding——Achieve the achievement and let Mr. Dazai tell Akutagawa his attitude towards Akutagawa personally] [Ding——Achieve the achievement and touch Natsume's cat] [Ding——Achieve the achievement and carry the Son of God until he was a toddler] [Ding——Achieve achievements and taste "candy" in the bitter summer] Ding——Achieved *#￥%&*@#￥@%￥&*#% ………… －－－－－－－－－－－－－ Notes for reading: 1. This article has no system! Generally speaking, neither the protagonist nor others can hear the achievement (and it has no special meaning). 2. There are too many achievements to write down (there will be achievements that are not written in the copy, or there are new achievements, but except for the case where I forget, all the achievements in the copy will be included) 3. The process of exposing oneself to a higher-dimensional world will be described in detail later. (The timeline may be a bit confusing, I will try my best to clarify it QAQ), the timeline is on the eve of the establishment of the literary hero Undead Army, DJ5t5 and DJxyj (it is a comprehensive comic) 4. You can post your own CP at the bottom of the article, but don't misunderstand or distort the author's meaning, and please don't step on it (Duwei is rigorous) 5. The author's comic is written by a writer, and may contain a lot of spoilers. Animation fans should be careful before entering. 6. The protagonist is more like an ordinary person, and the attitude of the government and other supporting characters will be explained later. 7. The protagonist has a name, [Mist] is not his original name. 8. QwQ is a bit like a primary school student's writing style, please forgive me. Intention: All is well