Why a test of strength?

Testing my strength against other living beings is my one and only pleasure!

Y-Y-You want to test your strength against me?

In terms of strength, you and I are worlds apart.

You've got to hurry and tell it exactly what your test of strength will be!

A simple test of strength, huh? I'm at kind of a disadvantage here...

Spirits aren't things you summon to test your strength!

A Demon Slayer barged in on me on my mountain, so we competed to see who was stronger, and I seized his sword.