Hi, I will try to mod on this map of yours too ! ^o^ Here are my suggestions
EASY
01:51:373 (end of slider) - Imo, make a soft timing section here sounds better. Then, you can change back to the normal timing.
02:43:932 (1,2,3,4,5) - Thisi part sounds nice (the nen ya nen ya part), but to make it more consistent, you should map the same in 02:47:653 too. XDOk, ignore this, found out the reason already
NORMAL
00:31:141 - Since this is normal, you should add a note here.
00:34:862 - ^
00:36:722 - Either add a note here, or make a slider that connect 3 & 4, as this prevent the waste of vocal here.
00:58:583 - ^ I think make a slider connecting the previous and the after note is better
01:09:513 - ^
01:15:559 - ^
01:30:676 - na nen yah combo ! Should add a note here to complete the awesomeness of na nen yah combo
01:34:380 - ^
01:45:559 - ^
01:49:280 - ^
02:48:815 - Ahhh ! I see you do it here !
HARD
Perfect. I see.... you want to save the na nen yah combo for HARD
INSANE
02:13:932 - add a note here for completeness of the vocal
02:53:466 - ^
02:53:583 - ^
01:12:304 - ^
Ok. Starred for the catchy "nen ya nen ya na nen ya" combo. XD
P.S. : What does nen ya nen ya na nen ya means ? Ahhh, feel tired after modding your 2 maps back to back. cya. Hope you can take a peek or a glance at my map. XD