- one day 

- aliens come

- bokuto, being the dumb dumb he is, gets himself abducted

- akaashi is just very disappointed

- he told him to STAY PUT. 

- and what did bokuto do? he wanted to see the spaceship. so yadayadayada he gets himself abducted

- and so akaashi learns the entire alien language just to reason with the aliens to get bokuto back

- he gets bokuto, and leaving the aliens shaking in f e a r

- they leave the planet and oikawa arrives sobbing