Neptunia x SENRAN KAGURA: Ninja Wars, also known as Senran Nin Nin Ninja Taisen Neptune: Shoujo-tachi no Kyouen (閃乱忍忍忍者大戦ネプテューヌ -少女たちの響艶-) in Japan, is a crossover game between the Hyperdimension Neptunia and Senran Kagura franchises for the PlayStation 4.
―Gamninjustri, a place where all manner of ninjas gather―
As the struggle for control increased between the Daimyos of the nations,
tensions rose between the two great nations,
each of which was home to one of the major schools of martial arts.
The Compa Style which has mastered the Ninja Arts based on the Command Technique.
The Honeypa Style which has mastered the Ninja Arts rooted in the Action Technique.
The two camps were stuck in a ruthless competition of skill in order to achieve hegemony,
but as they fought on, a mysterious army of mechanical ninjas made their assault.
The mechanical ninja army overran the smaller nations in an instant,
and its leader, Yoh Gamer, made an announcement to the world.
The "Super NINJA War" to decide
the world's strongest school is about to begin!
Heartland (Compa Style Ninjas)
- Neptune (Purple Heart)
- Voiced by: Rie Tanaka
A cheerful and energetic girl who calls herself the main protagonist. In her Goddess form, she has a more adult and serious personality.
- Noire (Black Heart)
- Voiced by: Asami Imai
One of the four goddesses of Heartland. She has a strong sense of responsibility, is a serious and honor student type. She feels like a companion, but she can't be honest and she can make bullish statements. In her Goddess form, she has a confident, warlike personality.
- Blanc (White Heart)
- Voiced by: Kana Asumi
One of the four goddesses. She is quiet and thoughtful. She often thinks before she acts. In her Goddess form, she has a rough and blunt personality.
- Vert (Green Heart)
- Voiced by: Rina Satou
- Voiced by: Kana Ueda
- The shrine maiden of the Kumotsu Shrine in Heartland. She is well cared for and well-established. She often acts with Compa.
- Voiced by: Kanako Sakai
- Voiced by: Mika Kanai
The tome of Heartland. She has a great deal of knowledge and can look up anything. However, it takes "three days" to find out.
Marveland (Honeypa Style Shinobi)
- Voiced by: Hitomi Harada
A 2nd-year student at Hanzō National Academy and main protagonist of the Senran Kagura series.
- Voiced by: Eri Kitamura
A former 2nd-year student at Hebijo Clandestine Girls’ Academy and leader of the Crimson Squad.
- Voiced by: Yumi Hara
A 3rd-year student at Gessen Girls’ Academy.
- Voiced by: Hiromi Hirata
A 3rd-year student at Hebijo Clandestine Girls' Academy.
Buinokuni (Baacha School)
- Voiced by: Miku Itou
A ninja serving for Princess Aaru.
- Goh the Crow
- Voiced by: Toa Yukinari
- Princess Aaru
- Voiced by: Kino Hina
- Yoh Gamer
- Voiced by: Chiwa Saito
The ninja master of the Steam Legion.
- Voiced by: Azumi Waki
A Steam Legion executive. She puts together a steam legion with Yoh, but unlike Yoh, she doesn't like fighting.
- Yokai Tayu
- Voiced by: Hideki Kojima
- Voiced by: Ichitaro Ai
- Voiced by: Hitoshi Bifu
- https://www.compileheart.com/news/?num=20210716 Info about delayed release