Almost every single album prints the second letter in AlAi as a straight vertical line, so it's not clear whether it's a capital
I or a lowercase
L. There's vast disagreement on the internet about which letter is correct; there's even
a page on the Japanese Wikipedia that uses both.
The interior of
the Tiny Dungeon soundtrack booklet (not the back cover) prints the second letter with a small hook at the top that matches the
L in the song title "blade heart." Further, every song registered with JASRAC uses an
L. So I think that's correct.