What is a prom, exactly? Yukino and Iroha have a plan to show both Hachiman and the student body the answer to that question - with Yui's help, of course.
The Student Council's prom plans sour after a shocking school policy reversal - and to make matters worse, an unexpectedly familiar messenger delivers the bad news.
Hachiman is determine to help bring the prom to life, but Yukino isn't keen on accepting his help. Luckily Hachiman has a plan - one that uniquely involves the Service Club.
First step in Hachiman's plan? Rally the troops. Together they'll create a prom proposal so awful, the PTO will have no choice but to choose Yukino's instead.
Pushing a dummy event like a second prom is a great idea on Hachiman's part, but the tactic isn't foolproof against Yukino's mother. Good thing he has an ace up his sleeve.
Hachiman has a new objective: granting Yui's wish. First step? Help her bake something delicious for Komachi, and perhaps include Yui's mom's "secret ingredient."