Samples with text (since no one has uploaded the game's dialogue or a full playthrough anywhere so it's the only untranslated game of the three Erectlip games with Shin) for sections of the game from the game's website:

https://erectlip.amusecraft.com/product10.html

There are also video previews of a few scenes with text and audio (showing a few full scenes though at very low quality) though you'll need to use wayback machine (as they used flash and WM uses ruffles to emulate it) or download the video files since they're still present on the site's source but won't show up due to using flash when viewing normally. (at least for me.)

The links to the preview videos (found by using view-source on the official website, will prompt you to download them.):

http://erectlip.amusecraft.com/file/jukujo_tri_d.flv

http://erectlip.amusecraft.com/file/jukujo_tri_c.flv

http://erectlip.amusecraft.com/file/jukujo_tri_b.flv

http://erectlip.amusecraft.com/file/jukujo_tri_a.flv