Onui and Tasuke

Onui and Tasuke
Japanese name:	おぬい/田助
Appearances
Primary franchise:	Fate
Appears in:	Fate/Grand Order
Characteristics
Species:	Human
Gender:	Female (Onui) Male (Tasuke)

Onui (おぬい, Onui^?) and her child brother Tasuke (田助, Tasuke^?) are two orphans who appear in Shimousa in Fate/Grand Order.

Profile

Background

Onui and Tasuke's parents were killed, alongside with half of their village, by the monsters controlled by the Heroic Spirit Swordmasters. They were adopted by Senji Muramasa when he came to the village. Together they live in the hermitage he took from the western village.

Role

Fate/Grand Order

Subspecies Singularity III: Shimosa

Onui and Tasuke encounter Ritsuka and Miyamoto Musashi while the two were searching for a village. Onui informs them they’re in Shimosa, correcting Musashi's assumption they're in Kaszu since Toke Castle is nearby. She also says Iemitsu Tokugawa is the current ruler. She invites Ritsuka and Musashi to come to Muramasa (who she refers to as grandpa)’s hermitage. However, the sky suddenly darkens, and the group is beset by spirits. After the spirits are destroyed, the sky returns to normal. Onui assumes they were bandits since Musashi was able to slay them without being a monk.

As the group travel to the hermitage, Onui says the spirits don’t appear there or the village, even at night. The sky then darkens again, but the spirits are quickly slain by Houzouin Inshun with a single strike of his spear. Onui is confused when Inshun calls himself not human, not knowing or understanding what a Servant is. Ritsuka explains Servants are like extra people, so Onui wonders if Inshun is a samurai despite being a monk.

Day suddenly turns into night occupied by a blood moon. Onui recalls Muramasa saying many bandits (monsters) will appear when there is a blood red. Sensing there will be greater danger than before, the group hurry eastward to the children’s home. They try to cut through a bamboo forest when they encounter the Swordmasters. They attempt to fight them, only to be overwhelmed by the Swordmasters. Ritsuka, Musashi, and the children escape while Inshun holds off the Swordsmasters.

The group continues escaping when they encounter Inshun. However, he is now a Swordmaster: the Lancer of Purgatorio. Ritsuka covers Onui’s eyes when Musashi decapitates Inshun to protect the children. However, Inshun gets up and reattaches his head. The group escape to the village and hide in a nearby haystack. Musashi covers Onui’s ears from the sounds of Inshun massacring the villagers. After he’s gone, the group leave the haystack and head for the hermitage.

At the hermitage, Ritsuka and Musashi meet Muramasa. He has the children to go inside while he talks with Ritsuka and Musashi. The next morning, everyone has breakfast while Musashi tells Onui about the ill reputation that Muramasa swords have with the Tokugawa. Later, Ritsuka and Musashi take the children with them to Toke Castle Town, having been asked by Muramasa to do so.

There Onui is given candy by Otama after she complimented on the latter’s beauty. She is confused by Otama calling her inn a paradise amid suffering, but says it sounds like fun. She is surprised to learn Kiyohime is a princess, having previously thought her dress was a costume. After Musashi stops Otama and Kiyohime’s fight, the group meets a missionary. Onui wonders if he’s tengu based on his white hair and height. He directs the group to an alleyway where they’ll meet someone they need and leaves. There they find Fuuma Kotarou collapsed, so they take him to Otama’s inn.

The next day, Kotarou has recovered some. The group then learn a large procession of samurai has recently arrived from Edo. Yagyuu Munenori explains he and the other samurai are on an official mission to bring those responsible for the massacres in southern Shimousa to justice with Matsudaira’s cooperation. While he and Musashi are talking, Onui notices monsters flying in from the south thinking they’re crows or black kites. After slaying the monsters, Ritsuka’s party is ordered by Munenori to aid his samurai against Tomoe Gozen. Onui and Tasuke are told to stay at the inn.

A day later Onui has Musashi babysit Tasuke while she’s in the lavatory. The children then watch Kotarou and Musashi’s duel from the room. Later Muramasa brings them back to the hermitage.

A couple days later, Onui welcomes Ritsuka’s party back when they return to the hermitage. Musashi tells her about their stay at Toke Castle and confirms Kiyohime was a real princess. After supper, Tasuke falls asleep while Onui struggles to stay awake. Katou Danzou then puts them to bed. Later that night, Onui goes to the lavatory with Tasuke when they’re hostage by Shuten-douji and Minamoto-no-Raikou. The group try and fail to get them back, and the children are taken to the summit of the nearest mountain.

On the summit, Onui begs Shuten not to kill Tasuke. Raikou threatens to kill Shuten if she tries to eat a child in front of her. She explains to a confused Onui that she could never kill a child, nor let one die in front of her. She commends Onui for doing her best to keep Tasuke safe. Then she tearfully apologizes for taking her and her brother hostage, saying all Swordmasters are broken.

Later that night, Onui cries herself to sleep. Raikou sings her a lullaby as Onui joins in her sleep. She stops and fully wakes up upon accidentally calling Raikou mom. Raikou understands Onui misses her mother, saying it’s expected for her to confuse another long-haired woman for her mother sometimes. Onui sees Tasuke likes Raikou as she reminds him of their mother. Raikou then cuts the children free and places them in a nearby shrine. She then leaves to fight Ritsuka’s party, lying to the children that she’s going to talk to them.

Kotarou finds the children there by the time Musashi slays Shuten and Raikou. Onui asks where Raikou is, to which Musashi lies she left after their “talk’”. Onui believes Raikou was a good person despite calling herself an oni. She recalls how she treated them, saying she reminded her of their mother. Muramasa gives her Raikou’s apology for tying her up, to which Onui says the ropes were loose. She then tearfully says Raikou was exactly like their mother. Everyone then returns to the hermitage.

The next day, everyone sees day turn into the blood moon night after they had breakfast. They all then ride to town on horseback after Danzou observed Toke Castle has been transformed into Onriedo Castle. There Ritsuka’s party leave Onui and Tasuke in Otama’s care while they head for Onriedo Castle.

After the Swordsmaster incident is resolved, Onui and Tasuke are sad to hear that Ritsuka and Kotarou will be leaving Shimosa. Kotarou tells the children they can choose to stay in town and ask either Kiyohime or Otama for help when they need it. They can also choose to return to the hermitage. Kotarou recommends the first options and tells them that Muramasa wouldn’t want to see them dispirited. Onui recalls Muramasa always said he’d leave someday. Though she misses him, Onui resolves to be brave and become like Musashi one day.