For me it was GRIEVA.
Since I love old school Visual KeiGrieva more or less sounded like that (Dir en grey-ish) at the beginning, but around mid 2015 the band slowly began to lose that sound, it slowly began to acquire more of a poppish style at the same time that most of their songs sounded uninspired to me, just a lot of songs released in such a short period of time every year.