Celebration

Celebration (オイワイ, Oiwai) is the twenty-eighth chapter of the Nisekoi manga series written and illustrated by Naoshi Komi, published weekly in the magazine Weekly Shōnen Jump.

Summary
Kosaki confirms that there is a possibility that she may be the promise girl that Raku has been looking for ten years. Before Raku could say anything, Tsugumi calls Raku to hurry over to Chitoge's home because they're late. As Chitoge approaches her home's gate, she is surprised to see Raku, Kosaki, Ruri, Tsugumi, and Shū come to attend her birthday party. Chitoge becomes afraid of telling Kosaki and Ruri that her family is made up of gangsters but Raku tells her that it will be fine if she tells them and end up telling Kosaki and Ruri the truth which they both find cool about her.

As the Bee Hive Gang greet Chitoge 'happy birthday' and welcome her friends, they all present her gifts from them. Despite Claude's grand gift of a car, Raku's gift of a stuff gorilla is much more appreciated by Chitoge.

In the balcony, Chitoge joins Raku to tell him his bad choices in picking presents but also tells him that she will treasure his gift since they're supposed to be a couple. Chitoge then asks Raku if he still loves the promise girl from ten years ago which Raku replies 'yes' to. She then asks if he had ever heard of the phrase 'Zawske in love' much to Raku's surprise.

Trivia

 * This chapter was adapted into an episode for Celebration (episode).