How do missing girls get promoted?

1. First open the game The Missing Girl, click anywhere to continue, meet Sumiko in the park, and wait for Sumiko to come and say hello.

2. Secondly, it doesn't matter if you choose after Sumiko accidentally does something wrong, which will increase your goodwill.

3. Then wait for Sumiko to finish the exam and follow her to protect her.

Finally, Sumiko can come forward to invite her to be a guest at home and promote her after she is separated from her classmates.