Manner Mode / Kisokutadashiku Utsukushiku / Kimi Dake ja nai sa...friends (マナーモード／キソクタダシクウツクシク／君だけじゃないさ...friends; Manner Mode / Regularly Beautiful / You're Not Alone...friends) is ANGERME's first DVD and Blu-ray single. It was released on December 13, 2017. The song "Manner Mode" was pre-released digitally on November 11, 2017.
The Blu-ray edition comes with Multi-Angle videos (which include Close-up, Front, Left side, Right side, Left side 2, Right side 2 and Overlook angles for each track), a download code for the 360° music video of "Manner Mode", and a music card for all three titled tracks. The DVD edition comes with a visual booklet. The single was also released digitally including the songs and its instrumentals.
This is the second consecutive single that does not feature 3rd generation member Aikawa Maho due to her being on hiatus with panic disorder during its production.
This is ANGERME's first major DVD and Blu-ray single, and the first Blu-ray single to be released by a Hello! Project artist.
"Manner Mode" was selected for the December 2017 power play of Tokai Radio program RUSH HOUR!.
In 2018, ANGERME released an acoustic version of "Kimi Dake ja nai sa...friends" on their 24th single. Murota Mizuki later digitally released a cover of the acoustic version in commemoration of her graduation.
Each song focused on three or four members of the group. Despite this, every member received at least solo line in "Manner Mode".