Shinzō wo Sasageyo!
... that the title of "Shinzō wo Sasageyo!", the opening theme song for season two of Attack on Titan, comes from an in-universe salute and battle cry?
... that the title of "<b id="mwAkI"><a href="./Shinzō_wo_Sasageyo!" id="mwAkM" rel="mw:WikiLink" title="Shinzō wo Sasageyo!">Shinzō wo Sasageyo!</a></b>", the opening theme song for season two of <i id="mwAkQ"><a href="./Attack_on_Titan_(TV_series)" id="mwAkU" rel="mw:WikiLink" title="Attack on Titan (TV series)">Attack on Titan</a></i>, comes from an in-universe salute and battle cry?