The name should have Tenge or Tenga instead of Tenka. It’s a wordplay on the quote “Tenjou Tenge Yuigadokuson”, This quote is also referenced in jjk by Gojo and it’s translation is “throughout heaven and earth, I alone am the honered one”. The quote is supposedly what buddha said upon his birth while raising his right arm. Moreover, this quote (also yuigadokuson or just dokuson) is used to refer to self importance or veinglory, as it is quite conceited to compare oneself to buddha.