Ritsu is attacked by students taking on strange shapes, but Satake Shogo saves him with a giant handgun.
Ritsu is taken aback by the sight of him relentlessly shooting students, but he comes to realize that other people can't see the giant gun or the transformed students.
Lost and confused, Ritsu returns to his home where he's greeted by his Mother who's now covered in static and repeating the same exact lines.
Welcome home. How were 
your entrance ceremonies?
أهلاً بعودتك. كيف كانت مراسم دخولك؟
Willkommen daheim. Wie war
denn die Einschulungszerem…
Bienvenido.
¿Cómo te fue en la ceremonia?
Bienvenido a casa.
¿Cómo fue tu ceremonia?
Coucou.
La cérémonie d’entrée s’est…
Bentornato.
Com'è andata la cerimonia di apertura?
Bem-vindo de volta. Como foi a cerimônia?
С возвращением. 
Как вступительная церемония?