Ichigo Kurosaki & Kenryū vs. The Assassin

is a fight that takes place during the Kasumiōji Conspiracy in which Ichigo Kurosaki and Kenryū fight off an assassin come to kill Rurichiyo Kasumiōji.

Prologue
Ichigo and Rukia walk home with Rurichiyo, Kenryū, and Enryū after school. Kenryū berates Ichigo for speaking Rurichiyo’s name in such a casual manner, but Rurichiyo says she doesn't mind. She runs towards a vending machine and asks Ichigo what it is. Ichigo buys her a drink and explains that it is a machine that dispenses drinks. Kenryū berates him once more, but Rurichiyo says it is okay, as she is a forgiving person.

Rukia takes her to an arcade, where they take pictures and play games. Ichigo asks Kenryū what they are going to do if more assassins appear, to which he states that it is none of his business. After they leave the arcade, Rurichiyo thanks Rukia and says that she will walk home by herself. Yuzu opens the door, greeting her brother, Rukia, and Rurichiyo. Yuzu suggests that Rurichiyo stay for dinner, to which she wholeheartedly agrees. At the dinner table, Rurichiyo comments on the delicious nature of Yuzu's food, but refuses outright to eat the carrots, which annoys Ichigo on her spoiled nature. But before he can say another word, Kenryū and Enryū pop out through a hole in the roof and reprimand him for trying to force her to eat the vegetable.

Ichigo tells them that she won't learn if she continues to get spoiled, going on to say that they were the ones that asked him to babysit her. Rurichiyo demands the meaning of Ichigo's words. Kenryū and Enryū are unable to reply, resulting in her leaving the table, saying she can't trust them anymore. Yuzu and Karin follow her out the door and Ichigo notices Kenryū and Enryū sitting gloomily in the corner. As Ichigo tries to console her bodyguards, Yuzu and Karin rush in through the door, saying that she ran out of the house. Upon hearing this, Kenryū, Enryū and Ichigo leap up and start searching for her. Several meters away, they find her discarded Gigai and Rukia deduces that she returned to her spiritual form. Fearing for Rurichiyo's safety, Ichigo tells them to split up in order to search for her. Meanwhile, Rurichiyo is seen walking by herself, with her head shrouded by her hat. She states that Kenryū and Enryū are stupid, but then trips, knocking her hat to the ground.

As Rurichiyo sobs quietly to herself, Orihime appears and asks what happened. Rurichiyo explains the protective nature of Kenryū and Enryū, to which Orihime says that they care for her so much that they won't let her worry about the little things, but that is not how Rurichiyo sees it. She tells Rurichiyo to understand how they feel and Rurichiyo realizes the error of her ways.As they are about to go back to the Kurosaki residence, a sudden gust of wind sends her hat flying away. As she goes to pick it up, an assassin stands before her.

Battle
He attempts to cut her down, but Orihime grabs her, pushing her out of the way. The assassin strikes again, but the attack is blocked by Orihime's Santen Kesshun. The assassin's Bakkōtō glows green, attaching itself to his arm. He then brings the huge sword down, causing a mass of green energy hurtling into Orihime's shield. The energy solidifies into a wall, crushing her shield as they move out from under it. Orihime grabs Rurichiyo once more, as the assassin prepares to strike, cutting them off with two strikes of his sword. Now surrounded by walls, the assassin appears before the opening, pushing them into the corner. Orihime activates her barrier, just in time to block another onslaught of green energy.

Orihime tries her hardest to ensure the barrier stays up, but as the energy becomes a wall, it proves too much for Orihime. Rurichiyo calls out for her bodyguards, as Kenryū and Enryū appear before them, protecting her from the assassin's strike. She is relieved to see them and they are rescued from the crumbling walls. Kenryū inquires if she is hurt, but she hugs them both instead, claiming it is her fault that they ended up in this situation. Ichigo and Rukia arrive on the scene moments later and ask what is happening. Orihime points to the crumbling mass of rock. Whereupon the assassin emerges relatively unharmed and proceeds to attack his new combatants. Ichigo is able to block the assassin's slow strikes, as he and Rukia manage to push him back.

Rukia tells Ichigo to be on guard, as he might use another strange technique. He then swings his Bakkōtō, sending green energy slamming into Ichigo and Rukia causing their swords to become embedded in the rock face. As they struggle, the assassin moves onto his next foe, as Ichigo grunts in anger, in an attempt to dislodge his Zanpakutō. As the assassin proceeds towards the unarmed group, Kenryū releases his Zanpakutō, Benishidare, resulting in the assassin's Bakkōtō to become covered with pink roses, rendering it useless. As Ichigo and Rukia destroy the rock walls, the petals attached to the assassin's Bakkōtō come loose, resulting in Kenryū's group surrendering. However, Kenryū once again uses his Zanpakutō’s powers, blinding the assassin, as they leave him to Ichigo and Rukia. The assassin, still impaired by the petals, fires off energy blasts randomly, causing them to evade his attacks. When he removes the petals from his eyes, Ichigo uses the diversion to fire off a Getsuga Tenshō, which destroys the walls surrounding the assassin.

The assassin crouches on one knee, about to attack again, but is stopped by Rukia's blade, who then asks him who was responsible for this attempt on Rurichiyo's life. Green energy spews forth from his Bakkōtō, causing Rukia to jump back involuntarily, as the assassin creates an enormous wall, running towards it. He pierces the wall with his Bakkōtō, causing it to crumble around him, killing him instantly.

Aftermath
After the battle with the assassin, Ichigo and his friends return back to their house, with Rurichiyo resolving to eat carrots. In the rubble of the rock wall, Hanza Nukui reaches inside and pulls out the Bakkōtō from the assassin's arm, as it glows green. The next morning, Ichigo awakes to the muffled cries of Kenryū and Enryū, who shatter his window, stating that Rurichiyo has gone missing again.