need help to extract dat archives

[bam_bam]

Hi, I want to extract dat archives.

Here is a link.
file 1 - https://www.dropbox.com/s/f6po1i15dlxu7ee
file 2 - https://www.dropbox.com/s/390t9yhd7xczgnq

Anyone help me please?
Thanks for your time.

[aluigi]

Name of the game? Platform?
Remember to speciy the name of the game EVER in the title!

[aluigi]

Hakuoki Shinsengumi Kitan:
http://aluigi.org/bms/hakuouki.bms

Hana Awase Mizuchi-hen:
offzip -a

[bam_bam]

oh, I'll be careful about this from next time.
system.dat which I uploaded was my mistake.
I wanted to upload anther dat file.
Anyway, Thanks for all your work.

I extracted the data.dat file and got some files.
Each file has many gim image.
But I failed to extract gim files from the archive.
Can anybody give me a help?
https://www.dropbox.com/s/3846554nb9tmbqy/title?dl=0

[aluigi]

Probably that's something for the Graphics section, anyway the file you upload contains a "Gimconv 1.50" string at the end.
Maybe it's just headerless?

[bam_bam]

yes, I knew it. Someone told me that. it seems like headerless file.
but I don't know how to handle it. I'm not good at programming.

[aluigi]

The script works also with VOLUME.DAT of Way of the samurai 2.
The strange thing is that the developers of these two games are different, Hakuoki (Hakuouki?) developed by Idea Factory while this game is developed by Acquire and Spike.