Answering a few technical questions.
First, that one have been asked a lot, the game really *doesn't* have a lot of story-mode spellcards. It's not a bug. I just checked the Tenshi files, stage 1 to 4 have 0 spellcards, and stage 5 has 2 spellcards.
Then, for data extraction, you can use this:
https://drive.google.com/open?id=1r0s5hX1n094kMcsTNKfrb5pFoKhWlja4Extract all this into the game directory, open a command prompt (Shift+Right Click on a free space in the folder, then "Open command prompt here"), type th145arc.exe /x th155.pak , then enter, wait until it is finished, then type, th145arc.exe /x th155.pak , then enter, wait until it is finished. I know I should rename it to th155arc.exe, but I forgot, and it doesn't really matter.
PNG and CSV files use a proprietary format, and you need a tool to extract them. It is also in the zip file, run extractBM (for images) and extractCS (for CSVs).
And for BMP files, that's a bit harder because extractBM isn't good enough to extract them (they are 8-bit files using an external palette). You can see and edit them with a slightly updated version of the palette editor I made for th145:
https://cdn.discordapp.com/attachments/249233979033518080/396617176062230528/Th145_palette_editor.zipI know only 1 palette is displayed for Joon, but I have way too many things to do right now to fix that.
Also, PNG and GIF export have been requested, but I don't have time for that either. If you want to do it yourself:
https://github.com/brliron/Th145-palette-editor (for th155 support, you just need to replace the th145arc.exe and fileslist.txt with the one from th155arc).