split theme
Multiple distinct (and usually opposite) themes being represented at the same time, with a split between them as a way to represent contrast.
The simplest way to do this is to have two opposite themes on each side with a clean split in the middle (see split screen).
Examples:
- Two different characters being portrayed as one (Danbooru post #1318355)
- While a character is in the middle of a henshin transformation (Danbooru post #1841349)
- Revealing the "true nature" of a character (Danbooru post #6870337)
- Comparing how a character looked when they were younger to when they're older