So... is Sekirei finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: September 26, 2010
Manga finished: March 16, 2018
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Sekirei
セキレイ
Anime - Base
Release date: July 02, 2008
Sekirei: Pure Engagement
セキレイ～Pure Engagement～
Anime - Sequel
Release date: July 04, 2010
Synopsis
Sekirei centers around Minato Sahashi, a young man struggling with academic failure. His life takes an unexpected turn when he encounters Musubi, a powerful and beautiful alien known as a Sekirei.
Musubi chooses Minato as her partner, which binds them together and involves him in the dangerous "Sekirei Plan," a competition where Sekirei fight each other.
Minato and Musubi must navigate this battle for survival, facing off against other Sekirei and their Ashikabi partners.
As they progress in the competition, they begin to understand that there are higher stakes involved than just winning the Sekirei Plan.