A translation from a fanreport that I found just then :)
It's long and has the detail about the birthday mc so I thought I'd translate it :D
Do not open it if you don't want to hear or read anything about it.

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Sho-kun greeted and the MC started.
Sho: I always do the the greetings everytime so it's obviously that it's going to be the same right? For the MC, I always start talking but today I would like to see a different version.


With that, they did other version of the other four members.
Because the previous one was Fighting Song  so they started talking from there.

Riida: (the fan couldn't remember but she remembered that he started it with a high tension)
Aiba-chan: He started with 'WASHHOI!' with a raised voice.
Nino: After Fighting Song, with a normal tension he said, Ok, the MC will start~! (Tamori-san version)
Jun-kun: He started with raising his voice and said, Seiya!
The girls! (the girls in the area said YAY!)
The boys! (the boys in the area said YAY!)
Not enough boys! (once more they said YAY!)

After that the boys talked a little of everything while walking towards the main stage.

Next, Kaibutsu-kun.

Once again the main stage only has 4 of the members as Kaibutsu-kun left.
Only Jun-kun moved around here and there while getting everything ready and the left over 3 started the MC.

Jun-kun had a sketch book shown to the camera that said,
From here on, because we'd like to do Riida's birthday party, please refrain from yelling during this time.
The audiences agreed by moving around their penlights.

During that time, the other 3 were talking about the released CD, and while the audiences are awar that the surprise were in the process, the three of them started talking and moving around funnily.

And there, the wedding look alike and a really tall cake appeared.
Collaborating with the juniors, they light the candles and it was time that Riida appeared.

Together with the band, everyone sang Happy Birthday.

The shocked Riida came to his sense and started smiling and blew the candles.

Next is present from the other 4 members.
Jun-kun made Riida moved to the centre of the stage and had him faced to the monitor and said, Stay here and watch it together with the audiences.
The 4 members moved towards the left and Ashita no Kioku, Riida's version Satoshi no Kioku  started.

Following last year's design, they showed the members childhood until present pictures, everything has Riida in it, it is a very special clip.
(the other 4 were singing Ashita no Kioku during this)

The clip is fully loaded of Riida's pictures starting from when he was small. Like last year's clip, before the serve they showed a picture with all 5 members and there were also 5 pictures in total of a bald Riida, pictures of Riida and another member lining up, comparing to last year's clip, it was much more loaded with full friendship. There are times where they smiled as they looked at the pictures but in the end Riida's expression looked like he was about to cry.


Having the clip made into a DVD, they gave Riida it as a present.
(Nino pulled it out all of a sudden from his pants stomach area)
The cover of it has a bald Riida.

At any rate, Riida was really moved at all of the surprised.

For the last two days the rest of the boys gathered before Riida came in for rehearsal. So that they weren't find out after Riida saw all 4 of them gathered together before him, today Jun-kun left before Riida came and came back like he wasn't there before.
Sho-kun came really early because he was really excited for today's food. (with that e ate lunch twice)
Aiba-kun came first as usual so he didn't have to act anything different.
Nino was preparing as well but didn't bother to act anything different.

Sho-kun: Before this on a magazine Riida said that until now, you've never been celebrated on a concert right? That was when we decided to plan.
Riida: Eh~? From that time!?

And from Riida,
when I had to be bald at that time, I actually got nettle rash, was what he said to them.
Then the other 4, we are sorry for laughing at you even though we knew that you had that condition when you were bold.

Lastly, Riida's last response in the end became a battle of being a  30 year old. He said,
For today, everyone is 30!  and during the encore Everyone is also 30! Yay~! and that ended the concert.
 

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MEMBER AI FOR THE WIN :D comments are appreciated since it does take time to translate :)
PS: Fixed the spelling of BALD lol it seems that I can never remember the spelling of that word!