package.xmlのversion指定が規定通りでないため動作していません。
知識がある方ならご自身で一時的に書き直すことで動作させられます。
（本来、x.y.zで記入するところです）

最新安定版にて導入しましたが、Modビューアーで赤字になっています。ご確認いただけると助かります

Sadly, these don't load at all in-game for me.

Excellent

To me images don't show up in ingame portrait selection. not when creating character and also not when editing npc on the board.

Google Translate:

These are portraits for the residents of your base.
I made these for myself, so the selection is a bit biased, but please feel free to use them.

-This is not a mod that automatically replaces images. Please set them manually.
-Additional portraits↓
> Shop assistant (female)
> Beggar (female)
> Farmer (male)
> Magician (male)
> Bunny (male) Added 8/13
> Puppy
> Bear cub
> Pheasant
> Snow petit (color variations available)
> Carbuncle
> Bonus for the main character: 3 dark-skinned males

-Feel free to take screenshots, stream, etc.
-Redistribution and claiming these as your own creation are not permitted.

画的真好