I Accidentally Killed Zhuge Liang from the Start. What Should Liu Adou Do?

Qin Yi, a seventeen-year-old high school student, unexpectedly had his soul transported to the Three Kingdoms era. It was bad enough that he transmigrated into Liu Shan, the famously inept son of Liu Bei. After Liu Bei was defeated by Sun Xun at the Battle of Yiling, he fled to Yong'an and fell gravely ill. The kingdom of Shu was on the brink of collapse, and before Liu Bei could make arrangements for what would happen after his death, Qin Yi accidentally killed Shu's pillar of support, Zhuge Liang.

Huh? What?!

This situation doesn't look good...

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Please do not imitate.