I was just planning to overhaul the mod for 1.5 but along the way I added new content related to updates since 2019.
The new contents are:

The i18n file for easier translations. Except for the new content, the rest of the dialogs remain untouched, for those who have already translated it, just update the i18n.
Unified and improved Shiko's room and her presence at festivals.
Added a place outside the house for Shiko to sunbathe on Saturdays, a.k.a. Spouse's Patio.
A version of her Sprites without 'Bow legs' like the original. Also added Sprites and portraits for the beach.
Extra dialogs related to game updates.

There's a new face in town and her name is Shiko Takahashi. She's a retired model who has decided to move from Zuzu City to Pelican Town in hopes to experience a simpler kind of lifestyle. Shiko's a bit of a mystery, kind of a whirlwind and very unpredictable. She's currently crashing at Gus's saloon, but she hopes to have a home to call her own one day. She's marriageable with her own custom heart events and schedule!

Notes:
- Birthday: Winter 6
- Loves: Golden Pumpkin, Maki Roll, Pearl, Prismatic Shard, Red Plate, Ruby, Salad, Wine.

Shiko's Event List:
- 2 heart: Enter the beach from 6:30 am - 10:00 am, must be sunny
- 4 heart: Enter forest from 8:00 am - 1:00 pm, must be sunny
- 6 heart event: Enter Saloon from 8:00 pm - 12:00 am
- 8 heart event: Enter town from 9:00 pm - 12:00 am when it's raining
- 10 heart event: Leave your house/Enter the farm from 8:00 pm - 12:00 am, must be sunny

Check out the wiki page made by psychicberry for more info regarding Shiko! https://stardewvalley.fandom.com/wiki/Shiko

Shiko - Custom NPC Redux