In Eraser, Nishikata is trying to taunt Takagi using an improvised jack-in-a-box. Takagi expresses frustration in opening her pencil case, so she asks Nishikata to open it for her. Nishikata opens the case and a horror-themed improvised jack-in-a-box pops in front of him. Takagi chuckles as Nishikata left in shock. In Day Duty, Nishikata goes to school and sees Takagi on the window. As he arrives in their classroom, Nishikata couldn't find Takagi until he sees her pair of shoes underneath of their teacher's table. Deducing that she is hiding, Nishikata bluffs by leaving the classroom but sneakily approaches the cabinet behind his desk. However, Takagi is not there, as well as underneath of their teacher's table. Nishikata sits down on his desk and Takagi pops out from the curtain besides him. Yet again, Nishikata fumbles in humiliation. In Funny Face, Nishikata asks his classmate for a perfect funny face that would make Takagi hysterically laugh. As he tries to make a funny face to Takagi, the latter gives him tips for a much improved and even funnier face. However, as he turns his head while in funny face, he faces their teacher and scolds him. In One-Hundred Yen, earlier Nishikata thinks of it as a hundred yen coin but it turns out that it is just only an arcade token. Mina, along with Sanae and Yukari, walks home. Mina suddenly stops and steps on the coin. Yukari dismisses Mina that she just stepped on an arcade token.