A KNIGHT becomes a BABY at NIGHT!?

Guards by day, needs care by night.

[Worldview]
Mental contamination called "miasma" accumulates during battles with monsters.

When miasma exceeds its limit, it causes mental breakdown or rampage, so the knight order conducts a top-secret purification therapy.

Its name is "Babu Therapy."

When night falls, knights lower their mental defenses and release their desire to be spoiled and dependent on a trusted person, thereby purifying the miasma.

Only the royal family, the upper echelons of the knight order, and a few related parties know of this fact.

This late-night babu time is called "Babu Night."
I hear the name comes from the king's dad joke, punning on "KNIGHT" and "NIGHT"...?