Rena wrote Kaede's name on the Friendship Ending Staircase. Kaede apologizes to Rena, but she is kidnapped by the Chain Monsters, confirming that the rumor about the staircase was true. In order to find Kaede and bring her back, Momoko and her companions come up with a strategy to lure out the Chain Monsters.
Yachiyo has joined the group after being asked by Momoko to help them. Yachiyo claims that Iroha will hinder the operation and refuses to let her participate in the battle with the Chain Monsters.
Just like Momoko said,
she gives off a "good girl" vibe
It's like the opposite of Rena
Honestly, I don't like it
I don't like going
from two people to three
I feel better when Momoko invites me
It makes it feel like she doesn't
want to be with me unwillingly
I mean, I don't know
I'm not used to these kinds of things
Momoko has the wrong idea about me
Short-tempered, annoying,
and looks down on you
Always says hurtful things
Rena Mizuki is that kind of girl
Momoko a raison, elle avait
l’air d’une fille bien sous tous
rapports. Tout le contraire
de moi. Franchement, je
l’aime pas. On sera plus
toutes les deux, j’aime pas ça.
Irascibile, fastidiosa, superba
Lingua tagliente 
Rena Mizuki è fatta così
Eu odeio Mizuki Rena.
Todos os dias, todo o tempo,
olho no espelho e sinto repulsa.
 Queria um nome mais bonito.