@kobi
If you are talking about the content of chapter 90, then it was published on 2018/01/31
But this manga is still ongoing: chapter 195 was published on 2020/10/28 (i.e. 3-4 days ago).
@blahto
Ongoing now has 195 chapters.
Chapters 193-195 - so far only in paid access.
For free reading, new chapters open almost every Friday, with a gap of 2-3 chapters from ongoing.