Titan ae and knights of Sidonia crossover.

Chapter 32-The Mysterious visitor

20 years ago, in nagates universe- (unknown voice-Once in a great while mankind unlocked a secret so profound that our future is altered forever. Fire, electricity splitting the atom. At the dawn of the 31st century we unlocked another. It has the potential to change humanities role in the universe. We called it the titan project and it was a testament to the limitless power of the human imagination perhaps that is what the drej feared most for. It brought them down upon us without warning and without mercy. Nagate that day, the day that were born the only thing that matter was keeping you and your mother safe.)

Present day-The crew of Sidonia and fleet cheer in joy as they hear the news that the gauna cluster has been defeated except for nagate he stares at lems star with tears then ren and en fly up asking if he's ok. Nagate replies I'm ok, but I can't help but feel sad after what Ochiai did for me. I thought maybe I could save him and make him realize what he was doing was wrong but, in the end, he sacrificed himself for me. Ren-Then let's not let his sacrifice go to waste. Let's get you to the gateway. As nagate looks towards the gate he says at least the war with gauna cluster is over then he hears someone over the coms say over? It's only just begun. Nagate hears screaming over the coms as the pilots who have the microchips in them begin taking over their body then ren says what's going on? What's happening to them? Mako-What's happening is a new order has risen and nagate will pay for what he did to my father. Nagate begins to say wait your then all of sudden a black guard come out of nowhere and attacks nagate making ren and surprised. They go help to him but are then blocked by two more black guards and are chase away. Samari-What going? Mr.Sei-Where did all these blackguards come from I thought only four were built. Tsuruuchi Watch my back I'm going to swing around to counterattack...Tsuruuchi do you copy? Sei looks to Tsuruuchi to see his guard has become a black guard and as sei says oh no Tsuruuchi attacks sei making him go on the defense.

On nagates ship mako watches as his guard's attack Sidonia's main fleet then he hears sakiko say mako all guards that are under our control are attacking Sidonia's main fleet. Mako- Good make shore to keep them distracted until we reach the gate. Sakiko-Understood. Mako-Nagate will pay. He took my father away from me and now I will take the last hope for him. Sidonia guards fight against mako black guards and as he positions the ship in front the time key displays a console right in front of mako. As he presses a button on it the gate begins to shift and synchronize as the ring inside spins around until an event horizon forms and the gateway activates. Mako looks at it amazed at its beauty then he says time unveil our secret weapon and presses a button on his wrist. As samari and sei are fighting the blackguard they recognize who piloting one of them as they see the guard's number through the hollow then samari says Tsuruuchi snap out of its us. Sei-Nothings working. Nagate-Sei do copy? Sei-I copy nagate what's happened to them? Nagate-Their being controlled by a microchip that was implanted into them. Sei-What how's that possible? Samari-The day when the guards exploded, they must of used it as a cover so they can create their private army with our pilots. Nagate-There's a way to save them. Samari-How? Nagate-I'm sending a code to every guard that isn't under mako control. It'll jam the transmission being sent the chips, but you have be close to the guards. Samari-That will be tricky. Nagate-Nobody said it will be easy. Samari says right then sei says what's going on with the ships. As nagate is disabling the blackguards he looks to see the hull on 4 of the Mizuki ships come off revealing underneath to be organic ships then he says no it can't be. Protect trinity he completed it.

As the guards continued fending off the black guards the 4 ships speed towards the gate and open fire at Sidonia forces until they reach the Valkyrie. Sakiko-All ships are in position mako. Mako-Excellent sakiko... I know this is a lot to ask but I need you to stay behind to make shore nagate doesn't reach the gate. Sakiko-Don't worry my love I will make shore he won't, and all even bring someone to help. Mako replies good then he takes the controls of the Valkyrie and proceed forwards towards the gate along with his ships and personnel blackguard. As nagate disables another guard he looks towards the gate and says is that my ship...oh no the gate way it's been activated. Yuhata-How is it activated don't you need the time key to activate it. Nagate-Mako must have found it on my ship...dam it guys my engine took some damage from lems star all never make it in time before the gate closes. En-Then we better get you there fast honoka's clasp formation on tanikaze. The sisters say roger then they clasp formation on nagate and as they clasp nagate yells punch it and they head towards the gate at max speed. They fly past lems star and most of Sidonia forces then ren says were not going to make it we don't have enough thrust before the gate closes. Nagate tightens his group then says disband making the sister say what then nagate says if I release my heigus particle directly to the maneuver thrusters it should be enough to push me into gate. En replies but you be the only one on the other side then nagate replies I'm not letting him get away do it. As the sister releases the clasp nagate pushes a button releasing the particles into his thrusters and he zooms towards the gate as the portal closes. As nagate is about to enter the gate sakiko come flying out of nowhere crashing into him along with another guard and as tries to fend off the two he sees who the other guard is through its camo then he yells izana...izana it's me.