Thanks a lot to my friend, nutcrackr from this community who posted the English subtitle translation for the game here: 侦探，请守护我的秘密吧！. You can download the translate directly on Google Drive[drive.google.com].

I really appreciate the work in making subtitles for this game. According to the post, update may change this translation due to english translation is inside game subtittle list.

Just a heads-up: if the game gets updated, it might reset the subtitles to the default language. If that happens, just reinstall the subtitles.

Thanks for reading!
I’ve created several other guides to help everyone navigate features, settings, and gain full achievements. You’re welcome to check out the full archive, and feel free to share or contribute if you spot something new.
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3544159746