It doesn’t take long for Sherry to tune the control unit, and she opens a hidden passage in a bookshelf to use the secret tunnels to get to where the artifact is so she can shut it down. She’s doing all of this for her father Ruslan, who took her in when her mother was brutally murdered.
She thanks Cid for all his help, and they go their separate ways. Once she reaches the balcony of the auditorium she finds out how bad things have gotten: the invaders are now simply picking off students for sport from above. Sherry wastes no time deactivating the anti-magic field, and when she does, Rose is ready.
Within seconds of getting her magic back, she slices the nearest invader to ribbons with a flourish of her drill-like ojou ringlets, and encourages everyone else to rise up and attack their captors; after all, they outnumber them. She tries to reach their armored boss man, whom even she isn’t sure she can defeat, but is soon surrounded and running low on magic.
Still, she fights on, confident others will fight if she dies, and eager to live up to the love Cid felt for her that led him to die for her. Things look dire until Shadow himself crashes through the ceiling and dispatches everyone around her. He’s not alone: his army of Shadows are with him, and mop up the invaders.
But the boss slips away, then hikes up the pressure of the oil lamps school-wide, causing an massive inferno. While I don’t hear a single cough from the ensuing smoke and flames, nor does anyone seem to be getting burnt by said flames … eh, whatever, maybe they’re special isekai flames.
The invader boss proceeds to start burning everything in Ruslan’s office, but Cid is there waiting for him, and knows who the boss is: Ruslan himself. Once he’d reached the absolute highest summit of swordsmanship, he became ill, and sought out a radical cure.
That’s how he ended up meeting Sherry’s mother. When she warned against using the artifact, Ruslan murdered her in a elaborate, grisly way, and while Sherry was present for that, it’s been established that she’s not very observant, and so never knew her adoptive father killed her mother.
Ruslan never gets into why he took the academy hostage, or why he set the academy on fire, but never mind, now that Cid’s there he’s not going to accomplish anything else. There’s a fun little fakeout when Cid lets Ruslan slash him right out the office window to his apparent death, only to reappear Batman-style in his Shadow form.
Ruslan fuses with the artifact in order to augment his power—as one does—but as you’d suspect, fighting him is still child’s play to Mr. Atomic, who doesn’t really have to break a sweat parrying his opponents’ lightning-fast fusillade of attacks.
When Cid has had enough, he ends Ruslan’s life in the exact same grisly way he ended Sherry’s mom’s … and just like that traumatic event, Sherry arrives just in time to witness a parent’s demise. Shadow departs as she screams out in anguish, not having the heart to tell her who Ruslan is and why he deserved this end. Knowing how much her dad meant to her, she most likely wouldn’t have believed him anyway.
While Ruslan was as two-dimensionally eeeevil as villains come (why else hire Oostsuka Houchuu to voice him?), he was never anything but a loving, supportive father to Sherry, and I was devastated watching her experience a repeat of her mother’s death. No one should have to face that. And now she’s an orphan again.
At the same time, I don’t blame Cid, because he did what he had to do. Even though Ruslan promised him that he arranged things so the real Shadow Garden would be framed for this entire terrorist attack, he shrugs that off. He never claimed he and his garden were walking the path of righteousness, but nor do they walk the path of evil.
Instead, they walk their own path. This comes as news to Alpha, who thought they were being righteous, but accepts Cid’s interpretation without hesitation, as does the rest of the organization. If Shadow is now the number one most hated and wanted fugitive in the kingdom, so be it—they’ll continue to do what they must.
As for poor Sherry, she and Cid share a muted farewell scene where she regrets not getting to know him better before heading abroad to a prestigious research institute. Before they part, perhaps forever, Cid asks her what she thinks she needs to do. A kaleidoscope of emotions fall over Sherry’s face as she’s momentarily unable to hide her emotions with a sad smile.
But she won’t tell Cid; it’s a secret. Does she, unlike so many others, know Cid and Shadow are the same person, and thus Cid is the one who killed her father? If that’s the case, is she going abroad in order to plan her revenge against him, or simply to start the next phase of her life as a researcher? It’s pretty ambiguous, and I like that.