What is the name of the song "It rained all night ..." in the cartoon city?

Singer: Deer

Theme song of cartoon city

It rained all night,

Getting up early is good weather,

I dreamed of you again last night,

Our happy game,

It was all my carelessness,

Blame yourself for being too careless,

I can't find your address,

But dad is going to the post office,

I want to tell you soon.

I used the crayon you gave me,

I drew a picture and sent it to you by express.

I'll tell you quickly.

I miss you very much,

No matter how far it is,

My heart is with you.

It rained all night,

Getting up early is good weather,

I dreamed of you again last night,

Our happy game,

It was all my carelessness,

Blame yourself for being too careless,

I can't find your address,

But dad is going to the post office,

I want to tell you soon.

How much I want to be together every day,

Research100000

The question of why,

I'll tell you quickly.

Understand some big truths,

The most important thing between friends is friendship.

My heart is with you.

My heart is with you.