Why is the moon in the idol dream sacrifice called chestnut?

The skating rink moon is nicknamed chestnut, which is pronounced in Rome, and the skating rink moon is pronounced ritsu.

Mao's nickname is also because of this pronunciation, really Mao.

Song's nickname for "Sister Lan", emmmmmm, may be due to her introduction of calling herself "Big Sister".

Zichuang is nicknamed Chuangmei, probably because she looks like a girl.

Because of his spell, Shinkai Kanata was nicknamed Puka.

The Japanese tree has a foreign name, A-mei's tibia, which is amazing for the same reason.

The above are the names of fans, and the roles are called each other.

The star Subaru called Isalamao Genggeng, and Sun Moon called Xu Zhen Xu Zhen, which should be literally translated as True King.

In fact, there are three favorite nicknames in the game, Harukawa Sora (with a small name in front), Lin Yue (with ~) and Akehoshi Subaru (not explained, all in the main line).

To sum up, I am not familiar with the Student Union and Red Crescent. If there are any incompleteness or errors, please supplement and correct them.

Finally, I selfishly licked the moon.