A mistake I found when read tankobon version.
Here is a skill Shaka used in original manga: Tenpou Rin In (転法輪印). It is Dharmachakra Mudra-a mudra (hand gesture) means the 'Wheel of Dharma'.
In Land of Wing Extra, Asmita used the same mudra with the same hiragana pronouns but the kanji is different (天宝輪印) in first time publish on magazine, in tankobon version, Teshirogi-sensei changed it to (転宝輪印) but still wrong.
And the kanji 宝 don't read as pou (ぽう) like 法 but as hou (ほう).