Warning! Spoilers ahead for PPPPPP chapter 13 and Attack on Titan chapter 139!
Reijiro Otogami of PPPPPP can summon and control titan apparitions through a form of piano playing known as experiential-visual music much like how Eren Yeager from Attack on Titan can manipulate his world's eponymous giants when he employs the Founding Titan's Scream. Eren has only used this ability for offensive purposes, which have culminated in the deaths of millions, but Reijiro plans on unleashing his titans for
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