"Crimson thread?"
Not knowing what it meant, I waited for Yse or Yuko to explain. The threads that connect me to my Companions are all red. More often, they're faint at first but once the red color solidified, it meant that our destinies have converged.
Crimson is just a deeper shade of red and for Yse to make that distinction, it's definitely not something remotely related to the red one.
"I'm sorry, Dai-kun. I've never seen a crimson thread during our past life. I have no idea what it means."
"I as well... It's not the same color as the one connecting you and your Companions. However, only yours have changed, Daisuke. The black and white thread became faint for us..."
Yuko's face became adorned by a frown. She's probably upset not to know what it means even after being the possessor of the mystical eyes in our past life.