For the first time Al Ahli won the Asian Champions League but they didn't challenge Al Ittihad in Saudi Pro League. They're in 5th position so they'll have to win more games next time to make a challenge against the best teams.
In addition to Al Ahli winning the Champions League for the first time, what is interesting is that players like Mahrez and Roberto Firmino have won the European Champions League with their previous teams, now they have won the Asian Champions League with Al Ahli.
Al Ahli this season in the Saudi Pro League is very inconsistent, they are in 5th place but they are successful in the Asian Champions League, this will be a sweet season of course. I hope they will be more competitive next season in the Saudi Pro League because they have good players. Initially many people predicted that the one who would get the Asian Champions League trophy would be Al Nassr or Al Hilal but now the champion is Al Ahli, that's football, always full of surprises.
On the other hand, I also see that the quality of the Japanese League is actually good, and that is proven by the performance of Kawasaki Frontale who managed to reach the final even though their squad only had four foreign players, unlike Al Ahli and Al Nassr who had many foreign players, even players from elite European teams.