I want to ask my junior to travel with me, and then I will confess to her. Is this ok?

Yes, absolutely. Girls themselves like to travel. It is a good thing to go out and see if they are willing to play with a schoolmate who has known you for many years, that is, to protect her and take care of her in all aspects. I suggest that boys boldly do what they want to do, cheer for the pursuit of a schoolmate, express their true feelings and build a beautiful love in your heart with practical actions. I wish you success!