I would have replied sooner, but I didn’t finish up reading the chapter until now!
Short version: At the point when Sailormoon was being insistent, she collapsed from overuse of power, and the others took her home to recover.
(I feel like Naoko Takeuchi was playing yo-yo with time travel.)
From Act 22:
When (in the future) Safir was about to kill Sailormoon, she received a massive surge of power from the encased Neo Queen Serenity. This allowed her to transform into Sailormoon, locate the others and awaken them, and by their transforming, bring them to her. (If I understand it all correctly.) After the other Guardians are returned to Sailormoon, there’s a page where an image of Neo Queen Serenity is drawn behind Sailormoon, indicating (I believe) that Serenity is speaking through Usagi. (This is followed by the text of the Guardians’ thoughts, 「セーラームーン！？ ……いいえ あれは…… ーーーネオ・クイーンセレ二ティ！？」)
When the time comes for the Guardians to escape, Sailormoon used Pluto’s key, and learns that Tuxedo Mask and Chibiusa disappeared into the mist of space-time.
In Act 23:
Sailormoon wants to go after Mamoru, against Pluto’s judgement. But before they can move, Sailormoon collapses. One of the girls explains to Usagi after she wakes in her room that it’s because Usagi used too much of the power she gained from Neo Queen Serenity. 「うさぎちゃん パワーを使いすぎて倒れちゃったの覚えてる？ 一旦 三十世紀から引き返して ここへ戻ってきたのよ」
Unrelated: Did Shingo have a growth spurt since we last saw him?
Glad to see you’re able to get back into it! I fear once I’m back to working not-at-home, I’ll have less reading time (even though I can read on the bus), and may need to cut back on a few things. But Sailormoon’s my priority, so it stays =D
I keep telling myself, “If I were better at Japanese, I’d better be able to infer who’s talking.” Whether that’s actually the case or not, I don’t know…
This is one of my favorite parts, as I don’t remember anything extra for him from the anime. (Well, aside from extra backstory invented by the dubbers because why not?) Maybe there’s more to him later in the anime that I don’t remember, so I’ll find out soon enough. (Up to episode 36.)
This one thing made Anime Motoki suddenly feel so stale to me in comparison =(