Man pages matching name string::koremutake in section 3pm:

String::Koremutake.3pm.en	debian 10 / libstring-koremutake-perl
String::Koremutake.3pm.en	debian 11 / libstring-koremutake-perl
String::Koremutake.3pm.en	debian 12 / libstring-koremutake-perl