Donsagi

Donsagi is the slash ship between Donatello and Miyamoto Usagi from the Teenage Mutant Ninja Turtles and Usagi Yojimbo fandoms.

The Big Brawl
While fighting Usagi in the Battle Nexus, Leo is shot with a poison dart. Usagi carries him, insisting that he accompany him to the healer's pavilion, when Donnie appears in front of him. He tells him to get his hands off Leo, but Usagi insists that he only wishes to help him. Donnie doesn't let up, but Leo momentarily wakes to tell him that it's okay. He then falls and Usagi and Donnie catch him as their transported to the healer. The healer gets to work, and Donnie asks what's with the Vulcan mind meld. Usagi is confused by the phrase, and Donnie plainly asks what the healer is doing to Leo. Usagi explains that he's trying to figure out what's wrong with him, when Splinter interrupts him.

Donnie tries to take care of Leo, but doesn't really know what he's doing. Usagi goes to help, but Donnie tells him not to touch him. Usagi says that he only wishes to examine Leo, and means no harm. Donnie allows it, but says he will be watching. Usagi then hands him a light for him to hold and gets to work. Usagi pulls out a prism and finds the points of entrance, and Donnie asks what it is. Usagi explains and puts medicine to Leo's neck. He says that all they can do now is wait.

Assassin's are about to kill the Daimyo, when Usagi and Donnie stop them. Usagi tells him to be careful, as he's encountered theses assassin's before and they are very dangerous. One attacks Donnie, and he says that he can say that again. Usagi does so, but is attacked by one of the assassin's and gets his sword caught in the pole. The assassin is about to kill the Daimyo, but Donnie grabs the sword, and says it belongs to his friend Usagi. Usagi grabs Donnie's bow and then uses it to knock out the assassin. Usagi says that he has something of Donnie's and the two trade back their weapons to fight off the assassin's. Usagi knocks out of them out, and Donnie reminds him that they can't get information if the assassin's are knocked out. Usagi apologizes, and they work together to take out the lasts assassin. They demand to know who he works for but the assassin just gives them a look. Donnie asks if it feels like the assassin knows something they don't, and Usagi turns to find that they are surrounded by assassin's.

Usagi says that they have to protect the Daimyo, and Donnie asks what will happen if they can't. Usagi says that they'll perish with honor, and Donnie would prefer to leave the perish bit out. They fight off the assassin's, Donnie aiding Usagi with a distraction, when they enter where the Daimyo is.

The Big Brawl
Part 4
 * Donnie yells "No!" when Usagi is about to be stabbed.
 * Donnie grabs onto Usagi before he get sucked into the portal.

Fanon
Donsagi is a very rarepair in the TMNT fandoms. There are currently only eight works on AO3.

Fandom

 * FAN FICTION