Detective Conan FILE 1008 Review/Discussion
"CARASUMA" was heavily implied to be the mirror-message of Kohji's dying message. As predicted, it did end up becoming the most reasonable letter arrangement, and it further enforces the idea that the clenched scissor case (File 948-950) is Gosho's parallel to the actual case from 17 years ago, since the mirror message "CARASUMA" ended up being a surname, just like the glass message "SENBA".
Wakita's move and Rumi's shogi piece
Wakita finally made his move. He went to Agasa's house to pry on Kudo Shinichi. This is a strong indication that he is interested in Shinichi for some reason. Following my suspicions about him being a Boss-associated BO agent, his actions does go in line with him wanting to confirm if Shinichi survived the APTX drug.
This was later followed by half a page dedicated to the Rum suspects, where we not only see Wakita giving off a serious reaction to the Shinichi cover-up, but also Rumi being in possession of a shogi piece.
The shogi piece she had beside her was the "promoted bishop" abbreviated as "Uma"("horse"). If this is an indication to her figuring out, or being in a possession of, the missing object, that Kohji was clenching between his hand and scissor, that was taken from the crime scene, then this also follows my prediction that Kohji was using "UMA" as a part of the dying message. Since "Uma" means "horse", and we not only had the "horse" reference for the Rum movie cover but also directly used canonically in relation to "Pirate's Spirit"/"Rum"/the culprit of the Kohji case(File 975), it further foreshadows that "Uma" is most likely the right word from the piece. Same would imply if the shogi-like missing shape of "U" in the hand-mirror was hinting to the Shogi piece that start with "U". As for whether Rumi's shogi piece is the exact same one as the one that was taken 17 years ago, that is yet to be determined. Same goes for the object in her pocket, however, since Gosho revealed the shogi piece now, it lessens the chance that the object in her pocket is something else but the Uma piece.
All that's left now is for the knight piece to be revealed, in order to complete the potential full name of Rum: Karasuma Muga.
After the Rum-suspects scene, we finally got the awaited development that we have been waiting: an objective for Rum. We have been due an official goal for the antagonist of this arc, and this is our only confirmed goal that we have gotten from Rum. Rum sent a text to Bourbon demanding information about Shinichi, and that was followed by an english idiom "Time is money!". This is our first time getting a canon glimpse at Rum's writing, and the first unique thing we get is him writing in english. This could be Gosho's indication that Rum has been influenced by an english-speaking country. Following my theory about Muga being Rum, it does go well in line with him, since he was portrayed to have gotten European/British influence.
A very interesting finding that the Japanese fans made was that "Time is money!" in Japanese ("Tokiwa Kanenari") is an anagram for "Wakita Kanenori". Considering that Gosho reminded us of Wakita's full name pages before this idiom was sent by Rum, it highly suggest it could be an intentional hint to that "Wakita Kanenori" is a fake name derived from the anagram of the idiom "Time is money!". Since Wakita was using idioms and metaphors in his introduction, it makes sense that he would use this idiom often as well (along with others like "It's like encountering a demon in the darkness"). Just like my suspicion that Gin was using one of Wakita's idioms, this could be Gosho's hint that Rum is also using one of Wakita's idioms (which further supports Wakita's BO affiliation and his potential high position to be able influence agents like Gin, and especially Rum).
Lastly, The biggest shocker was at the end, when Karasuma Renya was revealed to be, or at least have been, the Boss of the BO.
According to Yusaku, he is the most powerful man in Japan. This means that it's very likely that a Japanese like Haneda Kohji would know of the important figures in that family, so Rum's full name being known to Kohji makes more sense now (if Rum is a Karasuma).