The Beppu Brothers declare outright to the Defense Club that they're the ones who have been sending the monsters, but the Defense Club members just brush them off, spending their days in their usual slow pace while ignoring the brothers for two whole months. The Beppu Brothers, enraged over this slight, choose February 14th as the day they will have their revenge. And so the Valentine's Day grudge match begins!
Valentine's Day will be the 
day Hakone Yumoto dies.
Der Valentinstag …
San Valentín será el día
que Yumoto Hakone muera.
San Valentin será el día 
de la muerte de Yumoto Hakone.
La Saint-Valentin sera le jour
de la mort de Yumoto Hakone.
Il giorno di San Valentino sarà quello
in cui Hakone Yumoto morirà.
O Dia dos Namorados será o dia 
 da morte de Hakone Yumoto.