2. The Business Presentation
This next part is a bit of a spoiler. But one of the best female proposals was done by Midori, who came up with an entire business presentation to convince Wataru that they belong together. You can tell that if she could have made a powerpoint presentation, she would have. Since they both come from a business background, it makes sense that it sparked something in Wataru that made him realize it was time to propose to Midori.