
krishma quietly wants Akihito to be strong for his boss as his boss has many enemies and knows his boss wouldn't leave the boy, and he saw himslef how Akihito could be dangerous for his boss in the first link about not being able to fire a shot properly, so it could be possible he has chosen the place, or the Monk who could be man of Asami, hired to teach the boy some defences, not that Akihito don't know some defences, he knows, very basic one :D http://www.mangago.zone/read-manga/you_re_my_loveprize_in_viewfinder/mh/v08/c051/15/ (leave Asami surprised too.) With his great weapon Hahaha!
'bout the battle I've a this feeling too, Akihito is going to surprise Asami with his Gun power.

the reason could be plt. related.Note in recent update Kayama 's "accidental death". He is the bigwig that was in dealings with Sudo. Takaba was the ace reporter who broke the story of the Kayama's dirt with the hostess. at the temple there are no phones or t.vs. Takaba can't contact any one nor they him. Aaron is still alive and out there.

*Kirishima

So they purposely made him stay there (at the mountain temple) that he couldn't know anything and out of Aaron's reach.

The characters ,Asami and his men , may not know abt. Aaron's status post shoot out perse. They are aware of Sudo's and Kayama connection.Who ever attacked wants to kill them, an out of the way temple would keep him safe.

i can't remember his name propely! so i want all to the trouble of searching the difference between kirishima and krishma so I found krishma is hindo name's and it means Charisma and i don't think i can define him like that, it's asami aspect though. kirishima a japanese name of place, flagship, bad shape (economy) or day of deceit , or be sharp, cut .... japanese is too difficult (︶︿︶")

I wish we were shown how Aki was left there. Did he go willingly or did he put up a fight?

I would've like to see that too.
krishma was able to send aki to many others hideaway could it he chose this place for this http://www.mangago.zone/read-manga/you_re_my_loveprize_in_viewfinder/mh/manga/you_re_my_loveprize_in_viewfinder/v09/c055/pg-8/ becoze of this http://www.mangago.zone/read-manga/you_re_my_loveprize_in_viewfinder/mh/v08/c053/12/ krish think aki is as dangerous as asami's enemies or more ! lol he leaves nothing to chance ! .... and now that I"m rereading what the monk was saying to aki; I think the battle field will be not in japan , it's for Aki to go and join Asami !