The Great Ace Attorney: Resolve Quiz

Answer: The victim's identity made it too risky.

Susato Mikotoba muses this is the reason, and though her father Yujin doesn't confirm it, the silence says enough.

Answer: Kazuma Asogi

Immediately after this line, Satoru Hosonaga incorrectly guesses Jezaille, but Susato correctly assumes Kazuma after Raiten states it was "the student of law... from eight months ago!" He is also quick to clarify that no one in Japan knows of his death (which is how we know it's not Ryu) and that Yujin may have had a hand in covering it up.

Answer: William Shamspeare

Certainly Ryu, Susato, and Tobias Gregson were NOT expecting William to just rise up from the floor mid-investigation! It's not until later that we learn about Duncan having been killed prior to the case's events.

Answer: "It is a tale, told by an idiot, full of sound and fury, signifying nothing."

The "It is a tale... signifying nothing" line was also said by Inspector Gregson mid-investigation after Shamspeare rose from the floor and asked for someone to continue it. He says it himself when arriving in court on day 1 - and both the "O Heaven! O Hell!" and "One may smile.." ones are said sometime later in it. "The eye of man..." one is when he's talking to Olive Green while she's still in the hospital.

Answer: The fact that he is friends with the defendant, Albert Harebrayne

Iris doesn't take any visible notice of the cloaked man until they're speaking about him, and only Ryu is worried about the wine casks when they're examined (she's even humoring his fear here!). But, yes, the moment they note that they will be defending Albert catches Barok's attention and he tells them how he knows of him:

Iris: "It's strange how this has worked out, isn't it, Runo? I mean, what with you taking on the professor's defence for the trial tomorrow."

Van Zieks: "What?! You're going to be defending him?"

Ryunosuke: "Oh, yes, that's right. Though I barely know the man's name yet, to be honest."

Van Zieks: "Albert. Albert Harebrayne."

Ryunosuke: "That's right...Do you know him, by any chance?"

Van Zieks: "... Of course. He's a contemporary of mine. We were at university together."

Ryunosuke: "Your..."

Iris: "WHAT?!"

(She is shocked by the Reaper title thing after this moment.)

Answer: Both wanted him dead, for their own reasons.

Odie blackmailed Courtney for her Professor activities and made a fool out of Enoch for claiming to have seen said man rise from the grave (oh, if only all those people knew...). One person or another, he was going DOWN.

Answer: After Gina Lestrade barges into their suite on Baker's Street

Poor Gina, after what happened in the last game... she barges in CRYING and telling them everything of what she knows (to say nothing of who was accused in the first place!).

Answer: No

In fact, she specifically went to Herlock to ask after where he had gone; it is revealed in court later that she doesn't even know that he no longer works at Barclay!

Answer: On the SS Grouse

While one of the ships does go to France, they are specifically in the first class cabin of one of them right now.

Susato: "Mr. Sholmes! Where, where are you?"

Sholmes: "Myself and my trusty partner... ...are presently in the first-class cabin area of the SS Grouse."

Ryunosuke: "The, the SS Grouse?"

Sholmes: "She left Dover last night, after the final pieces of cargo were loaded. We are currently docked at Dunkirk, but due to be underway again in half an hour."

Ryunosuke: "You've...taken a ship to France?!"

Sholmes: "Please, even with my athletic prowess, I would struggle to jump the Straits of Dover. After we left Baker Street last night, we hurried by cab to the station and by train to the port... ...in order to board this vessel in time."

Answer: The fact that he had a child

Every other option was towards the start and middle of the will hidden within Karuma, but the child part came at the very end of it, after all of those things.

Answer: The small difference in Takeshi and Taketsuchi's names

'Takeshi' and 'Taketsuchi' differ in kanji ONLY by the lengths of their horizontal lines (think a hyphen versus an emdash). They would somehow have to pull a 'Countdown' level trick (i.e. turning Ted Tonate's ID into Juniper Woods's last name) to even come CLOSE to fixing this.

Answer: Herlock

For some continuity post 'Unspeakable Story', Ryu's not allowed to practice law at the moment and Susato is back in Japan, so Herlock steps up (with Ryu as the assistant instead).