Aliasing t-file -> satou_takeshi.
Reason: "T-File" is the name of the artist's website. The artist himself goes by "TAKE4" on his website, but on Pixiv it's 佐藤建 (which is more of a full name). I'm thinking the artist's name is read Satou Takeshi, given the "TAKE4" name (as 4 can be read "shi").
Updated by jxh2154