Combo Into Them After Heavy Finishes

The best way to land these attacks is to deliver one after a heavy finish. You’ll know it’s performed correctly if your opponent bends forward while holding their stomachs. While these commonly have combo extensions for more damage, they’re also a great moment to show off with a flashy super.
A majority of characters have one or two Rush Chain combos that can result in a heavy finish, but some don’t have any at all. The inputs aren’t universal across characters either, so I recommend taking your fighters into training and then checking the Rush Chain Actions page. It isn’t explicitly stated, but this page is unique to every character.