Katanas Are Justbetter has these relationships to other tropes:

parents kids shares a parent with:
Cool Sword
Wooden Katanas Are Even Better
parent child
Cool SwordExcalibur In The Rust
''Royal Rapier
''Heroes Prefer Swords
''Katanas Are Just Better
''Black Swords Are Better
''Sinister Scimitar
''Flaming Sword
''Laser Blade
You'll need to Get Known if you want to add or modify these relationships.