So far, text entry has been completed. All bugs have been fixed.
I have tested and made sure that no malignant bugs occur during normal play. But I haven't let others have a test yet. Maybe I can ask classmates have a try on this Friday.
The next step is to import background music and scene sound effects I produced during Easter into the prototype. A few sound effects still need some time to produce.
However, I still need some free Internet resources as sound effects and BGMs.