Tomo-chan wa Onnanoko! (Lit, Tomo-chan is a girl!) is on hiatus from December 19th, 2017 and will resume in January, 2018.
The official account announced that it is for the author to work on as drawing bonus chapters for the 6th volume which is scheduled to be released on February 10th, 2018.
Tomo-chan wa Onnanoko! is a 4-koma love-comedy manga which has been serialized in Twi4 (Tsuiyon).
It centers around a girl named Tomo-chan and her friends.
Via - Official Twitter Account: