Summer Pockets
Summer Pockets Subtitled Video Patch
You will need the steam version of the game, which you can download here.
This Patch adds subtitles to the opening and ending themes. The Alka route ending couldn’t be subbed because it is not a video file.
The patch should be installed to your Steam Summer Pockets directory.
Download:
Summer Pockets Subtitled Video Patch
Sources
You can download the tools that are being used for the full game here.