According to my fellow online yukkuri connoisseurs, a parent cleaning its poo-poo was an act of utmost easiness to a koyukkuri, making it extremely happy. In its paste brain, cleaning of poo-poo was a parent's job. Thus koreimu treated me as a parent.My own mood lightened along with koreimu's and I swayed my palm to its rhythm, letting her repeatedly rub-rub against my palm, resulting in her first smile since she entered my house. "Yu-yu~ yu-yu~ Yu-yu~ yu~ yu~~~" and she fell asleep.Wiping Koreimu's anyaru is a delicate operation. I could hurt her if my attention wandered for just a moment. So I carefully rubbed around Koreimu's anyaru with a wet cotton swab. Koreimu gradually stopped crying and started to watch me with curious eyes.After cleaning, as soon as I'd thrown away the cotton swab, Koreimu actually rubbed her smiling face on my finger. As she rubbed she let out "yu~ yu~" sounds, completely different from before. It was like the happy laughter of a carefree baby.