Friends who are deeply loyal to each other.
お互いに深く忠実な友達。 (Otagai ni fukaku chūjitsu na tomodachi.)
"Since childhood, they’ve been sworn friends."
"子供の頃から、彼らはお互いに忠実な友達だった。" (Kodomo no koro kara, karera wa sworn friends datta.)
to pay attention to small details or finalize things perfect...
false or misleading information presented as news
no longer interested or affected by something
to join someone’s online activity or conversation uninvited
to take control or responsibility
to reduce the time needed for something