In 2007, Takemoto replaced Lucky Star director Yutaka Yamamoto after his dismissal.

[3] In 2012, he was in charge of directing Hyouka, based on a series of mystery novels by Honobu Yonezawa.

In the series collaborated as screenwriter was Shoji Gatoh, author of Full Metal Panic!.

Two years later, in 2014, Takemoto was commissioned to direct another series of Gatoh novels, Amagi Brilliant Park.

[citation needed] Four days after the Kyoto Animation arson attack on July 18, 2019, Takemoto was declared missing by his father, who stated "he was untraceable".