Double suicide is romantic. Outrageous vehicles only make the hero cooler. Nothing delays romance like unruly neighbors. Fancy ice cream is for girls only. The most virtuous character will die.
Hot water has innumerable benefits.
No matter how much blood is lost, no one can die by a nosebleed. The girl with the curly hair is always the seductress. If a sister falls in love with her brother, somewhere down the line you will discover that they're not blood related. The guy in the baseball cap is always more powerful than he seems. All young children can pilot mecha, you just need to give them a few days.