Cells at Work! Friend

Cells at Work! Friend (はたらく細胞フレンド) is a spin-off of Cells at Work! written by Kanna Kurono, illustrated by Mio Izumi, and supervised by Akane Shimizu.

It has been published by Kodansha America as Cells at Work and Friends!.

Plot
The story, unlike the original, follows a Killer T Squad Leader and his problems in daily life. The main plot does not revolve around saving the body from various dangers, but instead how he tries to make friends despite his social anxiety.

Squad Leader is extremely hardworking and among the strongest Killer T cells in the body, but despite that, he doesn't seem to be able to make friends. Whether it be with his old classmates, subordinates, or even people around him, he just can't seem to make it work.