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What are the details of Liuchuan's actions that show that he cares about Kane?

Liuchuan likes Kane, but he has never taken the initiative to show his heart. Even 3631's identity is told to Kane by implication. So, what are the details of Liuchuan's actions in Episode 8 that show that he cares about Kane?

1. Kane brings him a lucky rope. He stares at her seriously;

2. After making her wish, she kept asking Kane why she didn't wonder why she had to withdraw her application to be a teaching assistant;

3. Seeing that Kane was very curious, she took the initiative to say what she wanted;

4. Kane said that she wanted to solve the old Dutch together, and she was as happy as anything else;

5. Before singing K, he took the initiative to say 'I have something to do, please accompany me', and then untied 3631's life experience;

6. When singing K, I peeked at Kane from time to time. The lyrics at that time were like this:

But you never know

How I like it

One morning I found you by my side

But you never know

How sad I am

I can't be with you every night

When the hair is gray

Can you still remember me

There is a word I must say to you

I will wait for you in a distant place

Know that you are no longer sad

I want you freedom like a bird