I Became a Fan-Favorite Character After Following Along with Live Commentary [Part One]

[The original non-human romance next door, “Wait, Why Aren't Any of Them Human??” is currently being serialized!] [The second installment of the comment-stream series is complete~ Next up: a horror story, “My Boyfriend Is Way Too Good at Crawling Around in the Dark!” Please add it to your list~ Also coming soon: the danmei comedy “The Cannon Fodder Cross-Dresses and Stuns the Dragon-Slaying Protagonist”] Kanedaichi Sansan always thought she was an utterly ordinary person, living in an utterly ordinary world. That is, until one day, something called [reader comments] appeared before her eyes, along with a countdown showing that she had only five minutes left to live. Only then did she realize the truth: she was nothing but a third-rate cannon-fodder character in a shonen manga, the kind who dies as soon as she appears. Kanedaichi Sansan: What the hell?! To escape her miserable cannon-fodder fate and change her destiny against all odds, she decided to Reader comments: [A random passerby is about to die in a curse-caused pileup right from the start!] Kanedaichi Sansan: Got it. She'll swim across the river today! Reader comments: [That girl is obviously cannon fodder. She'll die in the alley on her way home, and then my wife will come solve the case!] Kanedaichi Sansan: No way. She'll climb over the wall to get home. Reader comments: [That old geezer from the Time Vessel Association is about to... Huh?? I'm shook. Why is the association leader a girl now? Did the anime change things?] Kanedaichi Sansan: Things change with time. I'm done being cannon fodder! As the comments poured in, Kanedaichi Sansan watched her life timer keep adding one minute after another, feeling so good that she burst out laughing atop the Time Vessel Association leader's luxurious penthouse. Just then Reader comments: [Changing the person doesn't matter, right? This is an important plot point. Whoever leads the Time Vessel Association has to die!] Kanedaichi Sansan: ...Damn it! She's changing the association's name right now. Kanedaichi Sansan was a cannon-fodder character in a new project for an immensely popular manga and anime series, originally destined to be sacrificed as soon as she appeared. Somehow, her story went off the rails: from an utterly unremarkable passerby to the supreme leader of the Time Vessel Association, and finally an indispensable, fan-favorite character in the protagonist's group. Her popularity soared all the way. As the plot unfolded The genius sorcerer who should have died was given a new lease on life because of her, and the Plasma Vessel was saved. The boy possessed by the King of Curses changed his fate of “dying surrounded by others” and no longer had to bear an undeserved crime. Reader comments: [Waaah, wife! I bow down on behalf of my fave! From now on, I'll only buy merch of you and my fave!] Kanedaichi Sansan: Another 365 days added to her life... At this rate, will she live forever and ascend to heaven in broad daylight? This is great! She should go hang out with the protagonist's group some more! #Who says only those standing in the light can be heroes# (From the song “The Lone Warrior”) [Open ending, with one-sided crushes. If that's not your thing, please consider carefully before reading.] Important notes: 1. The story starts during the student years, and the timeline moves at a snail's pace. The main focus is Jujutsu Kaisen, though the timelines of some series may be changed. 2. The characters will definitely be out of character. I'll do my best ORZ. 3. The character design on the cover is from the commercially usable and editable Picrew design “Clearance Sale.” Theme: Who says only those standing in the light can be heroes