Okay, wow. It has potential. I like the premise that's for sure. And as someone who used to read isekai heroines who turn into some minor character in a story, I guess one of my fantasies is coming true with this game.
Tho, I have some issues with how much you use ellipses (…) in your composition. Too much of that is well, too much! And there's also the use of pronoun. It's he's not his. And there are those knew that should be know. I also think you should revise your sentences. But you're doing okay.
And as a fellow Filipino, reading your writing style makes me laugh because it's like a personal chatting style. I chat like that with some ellipses and sprinkle of humor. But anyway, I like it. You did good!