Quick answer — SIU worked on Tower of God (Original Creator), Tower of God Season 2 (Original Creator).
OP
Tower of God Opening 1 | TOP by Stray Kids
ED
Irregular God - Kevin Penkin
OP
Tower of God Season 2 Opening | RISE UP by NiziU
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Tower of God Season 2: Return of the Prince - Ending FULL "BELIEVE" by NiziU
Frequently Asked Questions
What anime has SIU worked on?
SIU worked on Tower of God (Original Creator), Tower of God Season 2 (Original Creator).