Here's a key for the symbols I'll be using on my character subtitles (may be updated later on)

☏ - General au ☆ - Soulmates au ♡ - Set up for a romantic relationship ♥︎ - Romantic relationship ❅ - Platonic relationship ☂- Familial relationship ☽ - Never met before (No relationship) ◉ - Other/acc info ❀ - Remake of an old bot