When the four exorcists arrived in London Allen was put in a private room for Bookman saw the condition of Allen he asked him.
"Did you fight alone the level 4?"
"Yes, is there a problem with that."
"Well kind of. I heard from Lenalee that you fought with a level 3 two days before. Because of that fight your body wasn't fully recovered and now you won't be able to use your innocence for one month."
\"But why?"
\"Allen you used too much power when you weren't fully recovered. If you try to use it earlier than one month then you life as an exorcist is finished."
\"OK.\"
After that Bookman went out of the room Lenalee entered the room with a lot of Allen wasn't hungry after what he heard. Lenalee asked him what happened and Allen explained everything.
\"Lenalee please don't tell this to Kanda OK?"
\"Fine i'll keep it a secret from you boyfriend. Hehe..."
"Yu is not my boyfriend!.....yet." then his face was red.
\"So you don't deny the fact that you love Kanda?"
\"Mmmm.... No." his face was still red.
In that moment Lenalee started to laugh '
\"Why are you laughing?"
\"Cause you are an idiot. So, you love him but he isn't your boyfriend. Kanda knows that you love him?"
\"Yeah and he loves me back ." Allen's face was even redder.
\"Wow, Kanda loves someone. You sure he isn't drunk or sick?"
\"Lenalee! what do you mean by that?"
\"You know Kanda loves someone says everything. It can't be that the ice that is covering his heart melted. Well if I think about it he still didn't yell at maybe he yelled one time at Lavi. Just once."
\" Oh yeah do you know where is Yu?"
\"He is speaking with brother."
\"OK, thanks."

While Lenalee was staying with Allen, Yu was with Yu was fighting with the level 3 he found the innocence. When Komui saw the innocence he understood the reason why there were so many Akuma. After he left the innocence to Komui, Yu left to Allen's room. When he entered he saw Allen with Lenalee and Lavi. Kanda saw how happy Allen was so he turned back. In that moment Lenalee dragged Lavi out of the room and left Allen with Kanda. In that moment Kanda started to cry because he left Allen alone and now he was really bad injured.
\"Don't cry Yu, it's not your 's mine,ne?"
"Baka, moyashi why did you fight alone?"
\"Because...... I don't have an explanation for that."
"Baka!! Because of that you will have to stay in bed for one 's what Bookman told me.
\"Don't worry a month will pass by really ?"
"Fine. Allen kiss me."
In that moment Allen kissed Yu on his cheek then on the eye and in final he kissed him on the lips and pushed his tongue inside Yu moaned and he blushed when Allen broke the kiss. Then Allen smiled and Yu's face was red.
\"Yu, your face is red,hehe."
\"Don't laugh,baka."
\"OK.\"

Then Kanda put his head on Allen's hand and kissed he fell asleep.
Allen was happy that Kanda stopped crying and fell asleep. Allen took his hand and caressed Yu's that moment Kanda moaned and blushed but he was still asleep the fact that he blushed made Yu's face was cuter. Then the British exorcist smiled and also closed his eyes because he was tired.

AfTeR OnE MoNtH

Allen got better and he could use his innocence. While he was going at Komui-san to see if he found someone that was compatible with the innocence he found Lavi who jumped on his back and kissed him on the Kanda was on the right side of Allen he took out Mugen and cut some of Lavi's hair
"If you touch Moyashi one more time I'll kill you." (Yu is jealous hehe)
\"OK I'll stay , Allen! "
\"Bye, , were you jealous? "
\"Yeah\", then he blushed.
"So cute. Yu look at me."
In that moment Allen kissed Yu on his lips and didn't let Yu Allen broke his passionate kiss Kanda couldn't look in Allen face because he was red.

THE END
Oh yeah almost forgot. The two of them remained , maybe Kanda died(never, don't want) or maybe Allen died(don't want to) or they adopted a kid. I don't know what happened after that because i am not Allen or need to ask them.