Based on community guides from Pixiv, here is how to "make" or apply the look using these shaders:
For anyone looking to upgrade their emulation experience—moving beyond the harsh, raw pixels of an LCD screen to something warmer and more organic—exploring the Xukmi shader library is an essential step. xukmi fx shaders
(specifically the KKShadersPlus suite) is a community-developed shader overhaul for Koikatsu , designed to modernize the game's original visual engine with high-end rendering features. Core Feature: Dynamic Character Lighting Based on community guides from Pixiv, here is
: The most popular version, acting as an upgraded alternative to the game's default shaders while maintaining a similar art style. KKShadersPlus Based on community guides from Pixiv