Yakuza games use 2 different models for major characters, one for gameplay, with lower quality textures, and one for cutscenes, with higher quality textures. This guide will allow you to merge cutscenes textures with gameplay models. Similar to FluffyQuack's Valkyria Chornicles mod or my Yakuza 0 mod

In general face textures, some clothes and body textures are improved for the major characters. They're kind of very subtle, mostly visible in the close up in some substories.
Textures themselves are 4 times bigger. They're taken straight from the game, so there should be no issues with inconsistent art style of textures, since they were made by the original game devs.

Comparison, click on the pictures to see more:

You can download the mod from this Nexus Mods link.[www.nexusmods.com]

Extract the file and copy and paste "main" folder from this archive into your Yakuza 5 folder.

[Update 1] Uncensored Saejima costume
If you installed Canzah's Licensed Music, Video and Uncensor Restoration Patch, copy and paste "main" folder from "uncensored_saejima" folder into your Yakuza 5 folder.
Credits to Canzah for the uncensored model.

Yakuza 3 and Yakuza 4 on PC already have high resolution textures installed out of box, but for Yakuza 3 you can download High res mod by O1Gamer[www.nexusmods.com] that further replaces the textures that for some reason were left from gameplay models and my high res Majima's jacket mod[www.nexusmods.com], which quite drastically improves the jacket textures.

There's also this kind of mod for Yakuza 0, Kiwami and Yakuza 6, if you're interested
https://sp.zhabite.com/sharedfiles/filedetails/?id=1465239828 https://sp.zhabite.com/sharedfiles/filedetails/?id=1660775310 https://sp.zhabite.com/sharedfiles/filedetails/?id=2439765454