Changes romanization of names to modified Hepburn:
Yuma -> Yuuma
Yu-(kun/chan/poo) -> Yuu-(kun/chan/poo)
Yuri -> Yuuri (Tina's nickname for Yuuri, Yuriyuri, stays as is, since it's supposed to be that way.)
nii-san -> Nii-san
onii -> Onii (except when it's after a name)
onee -> Onee (except when it's after a name)
senpai -> Senpai (except when it's after a name)
Doddler's [url=https://twitter.com/The_Doddler/status/916232638024761345]unofficial patch[/url] is also bundled with this.
If you have the Steam version, see [url=https://vndb.org/t10753#10]this post[/url] for instructions.