"Invincible Teacher" was serialized in the moe four-panel manga magazine "Manga Time Kirara MAX" (Houbunsha) from the August 2005 issue to the December 2006 issue. It's a chaotic school comedy featuring SQ-86, nicknamed Haru-sensei, a former military cyborg, and his unique students. It's a gem of a four-panel manga that has it all: moe, squishy characters, and surreal humor!

Digitals delisted as of 2020