This last episode starts at the airport where Yu starts his journey. (Long post, cause this is the last episode! Jokes. I just love this episode.)
He slowly plunders all the abilities he find and luckily, manage to plunder an ability to see ability-wielders on a map very soon. Sooner or later, when he manages to plunder tons and tons of abilities, the society gave him a name, 'One-Eyed Grim Reaper'.
He updates Shun about his progress and continues with his journey.
In Eastern India, he enters a building where he is ambushed by bullet rain and he instinctively uses his ability to protect himself. After that, he manages to survive and almost cried, weak at his knees too. This scene just shows us how he is still inexperienced and we shouldn't view him as overpowered.
As he rests in a hotel room, he can't shut out the noises he hear from his telepathic ability and lose control. The building collapses and he nearly killed a civilian by mistaking him as an enemy.
He notices his dirty clothes and his scribbled map. His memory also gets muddled up and he makes a mental note of not sleeping.
He starts to forget some stuff as in the next scene, he doesn't remember why he was in a battlefield. He also doesn't remember much about the word card that Tomori gave, other than the fact that that someone he made a promise to was someone dear to him.
He starts to lose himself as he continues from country to country, introducing himself as the 'Reaper' and immediately stealing people's abilities without explaining to them.
But he remembers a voice telling him to work harder.
We've reached the last ability-wielder in Beijing!
The last ability is 'Courage'.
After he plunders that ability, he walks away, ignoring the man trying to kill him and was strong on 'going back'. However, he realizes that he doesn't know where is home and by the timing, he was hit by another arrow. Then while he lies on the ground, grabbing the word card for life, Shun and trio find him by helicopter.
Back home, he wakes up in a hospital room yet again. But, not with Shichino with him but Tomori!
She talks to him and Yu reveals the fact that he doesn't know her. However, he tells her that the word card was like his good luck charm and Tomori explains to him what happened before and calls herself his lover.
Okay, it's cute how he wants her not to cry and that she likes him back. Those two points are cute enough. You all agree, don't you?