I looked around and found out that Saiyuki has more mini episodes. Here's one of them.
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This one was released earlier than the Gensomaden series and from different maker.
And the next one here is Kibou no Zaika when Kanzeon Bosatsu ordered them to find the pearl jade that shot down to earth from the heavens.
(Waktu awal lagi, tapi mata aku macam dah tak boleh buka sangat2)
So tomorrow I could start watching Zeroin and perhaps finish it on Monday since makcik takde life.