I found this here: http://forum.jphip.com/index.php?topic=21474.20
Credit to user AREHO @ jphip for the bass tab. Here it is guys:

*The song start with bass, after the space noises XD*
G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7-7-7-7-7-7-7--------------------------| x4


*when the guitars start to play, it changes to...*

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------5-----5-----7---------|
E|--5-7-7-7-7-7-5-7---5-7---7------------------| x4


*start to sing and keep the same secuence, repeat all the figure (x3 & x1) x4 times*

G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7-7-7-7-7-7-7--------------------------| x3

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------5-----5----7----------|
E|--5-7-7-7-7-7-5-7---5-7---7------------------| x1

*when tomomi says "paatyyy" and before haruna starts to sing, the last figure finish like this *

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------------5-5-7-7-9-------|
E|--5-7-7-7-7-7-7---7-7------------------------|

*inmediatly when haruna starts to sing*

G|---------------------------------------------|
---------------------------------------------|
A|-7-7---------------------7-7-----------------|
E|------7-7--5-5--5-7--------7-7/10------------|

* / means to slide

*then it starts again, playing first 2 times the second figure*

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------5-----5-----7---------|
E|--5-7-7-7-7-7-5-7---5-7---7------------------| x2


G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7-7-7-7-7-7-7--------------------------| x3

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------5-----5----7----------|
E|--5-7-7-7-7-7-5-7---5-7---7------------------|

*then the change is the same, but this time haruna ends and tomomi starts to sing again*

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------------5-5-7-7-9-------|
E|--5-7-7-7-7-7-7---7-7------------------------|

G|---------------------------------------------|
---------------------------------------------|
A|-7-7---------------------7-7-----------------|
E|------7-7--5-5--5-7--------7-7/10------------|


*and then "nagai todoku"*

G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|-10/5-5/7-7/12-12----------------------------|

G|---------------------------------------------|
---------------------------------------------|
A|---------------------9-11-9------------------|
E|-12/5-5/7-7/9-------------11-9-11------------|

G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|-5--5/7-7/12--12/5-5/7-----------------------|

G|---------------------------------------------|
------------------------5------7----7--------|
A|--5-7-7-7-7-7-5-7---5-7----7-----------------|
E|---------------------------------------------| x3

G|---------------------7-9-9-7---------------|
--------------------------------9-7--------|
A|-------------------------------------9-7---|
E|-5-7-7-7-7-7-7-----------------------------|

*tomomi starts to sing again*

G|---------------------------------------------|
---------------------------------------------|
A|-----------------------5-----5----7----------|
E|--5-7-7-7-7-7-5-7---5-7---7------------------| x3


G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|-5-7-7-7-7-7--7--7--7------------------------|

G|---------------------------------------------|
---------------------------------------------|
A|-7-7---------------------7-7-----------------|
E|------7-7--5-5--5-7--------7-7/10------------| x2 *when plays the 2nd time, the end changes to*


G|--------------------------------------------------------------------|
--------------------------------------------------------------------|
A|-7------------------------------------------------------------------|
E|---7-7/10-10-10-10-12-10-12-10-12-10-12-10-12-----------------------|

G|---------------------------------------------|
---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7-7-7-7-7-7-7--------------------------| x7 *when play the 4th time repeat 7-7-7 a few more times*

*and the end*

G|---------------------------------------------|
---------------------------------------------|
A|---------2------------4-5-6-7----------------|
E|-0-2-4----5-4-2---------------0--------------|


*NOTE* I modified the outro because it sounded better than in the original tab. Easy to play, so aspiring bassists please enjoy! And even if you have no bass but want so badly to play this song, if you have an acoustic guitar use it!
Tanoshimi kudasai, please enjoy

Does acoustic reach fret 12?? lol just asking :p

Haha, yes! Acoustics have up to 21 frets, or at least my acoustic guitar does... I have to go check .pinch.
But I hope you enjoy the tab

This song,Tomomi is pretty much.
This song bass played hard. .nosebleed.

Yoyoyoyo, ima feelin' tomo-babe's power thru this rad song! XDD
thanks a bunchie porcy-baby, yuh made this boy-o jump offa da deep ending here boy!

~peace~ \o/

Been wanting to play this song for ages! Thank you!!! :D

*Rockin on my bass* YEAH BABYY!! Thisa rocks da boat baby yeah!

~peace~ \o/

OMG.. this is awesome.. been looking for this for quite some time.. Hahaha.. nice one there.. *with the comments * and all..

*The song start with bass, after the space noises XD*

G|---------------------------------------------|
D|---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7-7-7-7-5-7--7-5-7-7-5-7-7-7---------| x4

It's a lot easier to keep track if you leave out a couple of notes - I think it sounds just as good too
G|---------------------------------------------|
D|---------------------------------------------|
A|---------------------------------------------|
E|--5-7-7--7-7-5-7--7-5-7--5-7-7-7---------| x4

I bought a bass guitar last month and find the Audacity software invaluable for learning bass lines. You can bump up the pitch, slow things down and loop them. And it's FREE

ahaha....TOMO really works so hard cuz the tabs are not easy to play....by the way!~

THANK YOU FOR THE TABS!~ .hail.

Tomo , Your Really Awesome .wtf.

Thanks for the tab! Being not only a musician, but the bass player in my band it's always fun too learn Scandal songs on bass. Then when I'm at practice just randomly start playing them. Lol