When Yukimura met Zi Shu for the first time, he just thought it was a good name.
That day was his birthday.
When Yukimura learned about Zi Shu's illness, he didn't say anything and just held the gift box in his hand tightly.
That day was also his birthday.
There are three small seeds in the gift box, namely forget-me-not, pink tulip and calamus.
That day, Zi Shu died of illness.
Zi Shu: Another name for tulips. Tulips can be used as a sedative. The bulbs are poisonous.