Umm what's it called (get backers!)

[Ir0nExpress]

What's the beginning theme to get backers called? (i've only watched like 6 episodes so far, i don't know if they change theme song later)

[DrWho2002]

1st OP - Yuragu Koto Nai Ai
2nd OP - Barairo no Sekai

1st ED - Ichibyou no Refrain
2nd ED - Namida no Hurricane
3rd ED - Mr. DejaVu
4th ED - Changin'