I hope I don't give up halfway, heh!

Translation:
1 Child Possessed by a Demon
2 Demon Ghost
3 Mad Imp
4 Demon Gravedigger
5 Imp Gentleman/Tuxedo
6 Succubus
7 Acid Demon!!
8 Demon Albino
9 Sea Demon
10 Demon of Sweets
11 Bone Demon
12 Painful Demon
13 Imp Seller in a Store with All Kinds of Damned Junk
14 Lucifer
15 Demon of Dreams
16 Imp with a Melee Weapon (Scythe, Sabre, Whatever)
17 Steampunk Imp
18 Demon from a Music Box
19 Demon Maid/Butler
20 Demon of Flowers/Gardener
21 Achromatic Imp
22 Free Day! owo