Conversation so far:
What led to Hansen and Kiske's departures?
Guitarist Kai Hansen unexpectedly left the band in 1989 soon after the European leg of the Keeper of the Seven Keys: Part II tour.
Why did Kiske leave?
the conflicts within the rest of the band worsened, with Michael Weikath refusing to work any longer with Michael Kiske.
The decision was made to fire Kiske.
Did Hansen give a reason for leaving?
due to ill-health, conflicts within the band, troubles with Noise International, and a growing dissatisfaction with life on tour.
Who replaced Hansen?
Weikath chose his friend Roland Grapow to replace him, including for the rest of the tour.
Who replaced Kiske?
CANNOTANSWER.
Are there any other interesting aspects about this article?
1993 would come to a close for Helloween with no singer, no drummer, and no record contract.
What did the band decide to do then?
CANNOTANSWER.

Question: What other conflicts did the band have?
Self-contained rewrite: What other conflicts did the band have besides Hansen and Kiske leaving?