Openings Endings
1

OP1 Jaja Uma ni Sasenai de

Episodes 1-18
Catbox
2

OP2 Little ★ Date

Episodes 25-41 nsfw
3

OP3 Omoide ga Ippai

Episodes 42-63
4

OP4 Zettai! Part 2

Episodes 64-87
5

OP5 Chikyuu Orchestra

Episodes 88-117
6

OP6 Mou Nakanaide

Episodes 118-135
7

OP7 Love Seeker CAN'T STOP IT

Episodes 136-161