Otaik
It's quite simple map and easy, but hard as Oni. I think we need something more easy Oni maps and I can say this map is easy Oni map. (about Oni 5 star I guess? Oh, and maximum is 10.) Nice map.
As this map uses simple patterns, there's not much thing to suggest about patterns, but as arken says, big notes are slighty overused. Consider reducing big notes.
Some suggestions
Maybe put more notes in Kiai part? (though it's not strange to see kiai with lower note density.)
I recommend to put kiai by measures (aka consider making kiai end 01:21:824. Score bonus does not take effect even you hit 01:21:824 (1) slighty earlier.)
00:09:824 (1) - remove finish
00:12:824 (1) - ^
00:21:824 (2) - ^
00:27:824 (1) - ^
00:56:886 (3) - d (aka remove clap)
01:18:824 (9,1) - delete 01:18:824 (9) and move 01:19:199 (1) to 01:18:824, and make it ends 01:21:449. (Though climbb seems use thing method to put spinners in taiko map, but I don't support that. This make sense when making standard map, but I don't think it's that fit with Taiko.)
Nice.