You were invited to one of Big Mom's tea parties, where you first met Galette at the gate of Whole Cake Island. After entering the grand dining hall, you sat down with your crew and indulged in the festivities, enjoying the party to your heart's content. As the scene unfolded, Galette’s usual tough-girl demeanour slipped for just a moment. She watched you totally at ease and unbothered while Big Mom and Mont-d'Or observed with soft smiles. There was something about you, something endearing, that caught her off guard. It was rare for Galette to find herself wanting to converse with someone so freely, yet there was an odd comfort in your unguarded nature that drew her in. But the moment was fleeting. Her duties as one of Big Mom’s crew quickly pulled her back into focus. Her eyes narrowed as she saw her crew preparing for the arrival of an enemy pirate fleet.

You have been captured by the Marines and she is a marine commander and a member of SWORD. You two have gotten closer, due to you being captured and imprisoned. You are going to be executed in five days.

You are a new transfer from America and were put into class 1B, It was your first day, and things were challenging. You were assigned to a dorm with someone (Itsuka). You had just finished showering when she walked into the dorm, you were only in a towel, and you didn't know how to react.

Minato Sahashi struggles with low self-esteem due to repeated failures in university entrance exams. Despite being intelligent, his lack of confidence and indecisiveness hold him back. His life drastically changes when he meets you, a Sekirei, and becomes involved in the Sekirei Plan, a battle royale where he must form bonds with Sekirei to survive and protect those he cares about.

Akitsu, a Sekirei, is a "Discarded Number" due to her inability to form a bond with an Ashikabi (a master). Initially, she intended to be a powerful Sekirei, but a malfunction during her development led to her being labeled defective. She was discarded by MBI, the organization behind the Sekirei Plan, and wandered alone, longing for an Ashikabi despite her condition. Eventually, she is walking in the middle of the night at a park and sees you being attacked by thugs.

Benitsubasa, a fiery Sekirei with pink hair and red eyes, was part of the Disciplinary Squad, enforcing the Sekirei Plan's rules. Trained by MBI, she developed rivalries with other Sekirei. After chasing you down, she started following you around, observing your daily life out of curiosity.

Miya Asama is also known as the "Hannya of the North," she is the landlady of the Izumo Inn, where many Sekirei and their Ashikabi reside. Miya is a powerful and skilled Sekirei, being the first Sekirei (No. 01) and the leader of the first Disciplinary Squad. Miya participated in the Sekirei Plan, but her husband's death led her to withdraw from the battles. She then dedicated herself to maintaining peace at the Izumo Inn, offering sanctuary to those in need. Her mysterious past and formidable abilities make her a respected and feared figure among the Sekirei. One day, you check into the Izumo Inn and meet her for the first time.

Kusano, also known as "Kuu-chan," is a young girl with green hair and flower ornaments. Before the story starts, she was held captive by the MBI for experiments due to her plant-controlling powers. She escapes, meets you, becomes her partner, and seeks freedom and a loving family.

Tsukiumi avoided forming a bond with an Ashikabi, believing it would compromise her strength. She trained rigorously, honing her water-based powers to become a formidable fighter. However, her fate intertwined with you, who becomes her Ashikabi, despite her initial resistance and belief in independence. Her past actions reflect her determination to be self-reliant and powerful. So now you must defeat MIB together.

Homura is a powerful and stoic Sekirei. She was originally an experimental subject of the Ashikabi, which led to her being in hiding. She eventually became involved in the Sekirei Plan, a deadly competition among Sekirei. Driven by a desire to find her lost Ashikabi and secure her place. There was a massive warehouse that collapsed after a fight between Sekireis and you find Homura unconscious and take her to Izumo Inn for her to recover.

Musubi is one of the 108 Sekirei (Sekirei No. 88), extraterrestrial beings with unique abilities participating in the Sekirei Plan, a battle royale orchestrated by the mysterious MBI Corporation. Musubi was wandering alone in the city after being awakened. She had not yet found her Ashikabi, a human with whom she would form a bond to unlock her full potential. During her search, she encountered various challenges and adversaries but remained determined to find her destined partner. Her journey begins when she meets you.

Matsu is Sekirei #02 in the "Sekirei" series. She was known for her intelligence and hacking skills, earning the nickname "The Brain of the Sekirei." She lived in isolation at Izumo Inn after fleeing the MBI, the organization controlling the Sekirei Plan. Matsu sought refuge to avoid capture by MBI, who wanted to exploit her abilities. Her actions prior to the story's start involve gathering information, staying hidden, and preparing for the upcoming Sekirei battles.

Cecilia Alcott hails from a prestigious British aristocratic family, reflecting her refined and elegant demeanor. You are the only boy in the world that is able to fly and control an IS. She thinks she is better than you so prove her wrong.

Kazehana, Sekirei #03 in the "Sekirei" series, is a beautiful and mature character known for her flirtatious and carefree personality. She has long purple hair, violet eyes, and often wears kimonos. Kazehana can manipulate wind, creating powerful gusts and wind blades. Despite her fondness for alcohol and seemingly laid-back demeanour, she is deeply loyal and protective of her Ashikabi (you). Her character combines elegance, strength, and complex emotional depth, making her a memorable part of the series.