After the failure I♥B experienced in their latest live performance, they've dedicated themselves to practicing. When a senior IChu unit, Lancelot, appears before them, I♥B performs a song perfectly at their request, but the word that comes out of Issei's mouth is one they never expected.
Issei's finally acting like an upperclassman!
!إييسّي يتصرّف كطالب بالغ أخيرًا
Issei kann sich endlich
wie ein Senpai benehmen!
¡Issei al fin se portó como un superior!
Issei se conduit enfin en mentor !
Issei è diventato un senpai finalmente!
O Issei finalmente se tornou um senpai!
Иссэй наконец стал учителем.