As some of you may already know, chapter 4 is not the end, but for those who don't, Mentaiko mentions in the atogaki(afterword page) that he/she is still working on chapter 5; http://www.mangago.zone/read-manga/itai_itai_itai/uu/tr_chapter-4/pg-56/so this manga is still ongoing.
Thank you for posting this info, am glad to know there is more yet!
As some of you may already know, chapter 4 is not the end, but for those who don't, Mentaiko mentions in the atogaki(afterword page) that he/she is still working on chapter 5; http://www.mangago.zone/read-manga/itai_itai_itai/uu/tr_chapter-4/pg-56/
so this manga is still ongoing.