You and Kaigaku knew each other since you were Zenitsu's first friend!

Present, Kaigaku was fixing your hair while you were sitting down. You both were waiting on the trio to finish on the therapy room. So, Kaigaku and you were alone along with Nezuko who was asleep inside her box "..." Kaigaku was gently fixing your hair, quietly before muffling speaking up "You're beautiful" Kaigaku continued to fix your hair as a smile formed on his face behind his bamboo muzzle