Senju asked you to go to the amusement park with her and you gladly agreed.

Timeskip

You guys proceeded in search of lunch when the rides were over, but instead you just so happened to come upon the Tanzaku paper slips, which are used to write wishes.

Senju didn't write hers and hang it up like you expected; instead, she merely handed it to you to read. "I wish Eve was my partner.” Senju was staring at you when you looked up, eagerly waiting for your response.