I'm not sure specifically what 'Cap deage' means. It could be a very specific term, a misspelling, or something relatively unknown. It might be a proper name, a local term in a certain area or a very niche concept.
Well, in the Nisekoi light novel, it's a story full of love triangles and comical misunderstandings. Raku is at the center of it all. He has a locket which is supposed to match with the key that his true love has. Chitoge is a tough - girl - on - the - outside type, while Onodera is more of the shy and sweet girl. The light novel explores how Raku deals with his feelings for both girls while being forced to be with Chitoge due to the yakuza pact. There are also other characters like Seishiro Tsugumi who add more depth and complexity to the story.
In 'nisekoi ending story', it probably concludes the complex love triangle and other sub - plots. Maybe it shows how the main characters finally make their relationship choices and how their friends and family react to those choices. It could also deal with any unfinished business in the story, like resolving conflicts between different groups or dealing with secrets that were still hanging in the air.
Overall, the ending of Nisekoi ties up loose ends and brings a sense of closure. The characters' relationships evolve in a way that satisfies most fans. There are some surprises along the way, but it all leads to a fulfilling conclusion.
Sure, the Nisekoi manga has reached its conclusion. The ending wrapped up the storylines and provided closure for the characters and their relationships.