 If you liked
Unkai no Meikyuu Zeguy
|
 ...then you might like
Fire Tripper
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While not apparent at first glance, both series have an interesting time loops in them.
The one presented in "Fire Tripper" is a more complex one, that might leave you confused even some time after watching it. The time loop in "Unkai no Meikyuu Zeguy" is quite simple, but still interesting to watch.