Responses
The assassin Akihito pointed out could not have come up through the safe room because Asami is still standing on the escape ladder from the safe room. Some of the assassins were on the roof originally and rappelled down to the terrace of Asami's apartment.
The last chapter, remember when aki yelled at Asami on your right and it was one of the Russian assassin's behind him and he shout him. They finally found the hidden door to the safe room. Now that Asami told krishima to cover him and I hope with krishima help asami will make it to them before more of those guys start coming from the back then all three have to deal with them and Aron ( did I spell his name right) ass.