Looking at the Timeline for the Astral Express displayed in the Wiki, made me realize that Himeko travelled for at least 10 Years through the Cosmos, with Pom-Pom as her only companion. Given that there are no other passengers mentioned between the departure of the Astral Express in 1984 of the Arcadian Calender and December 8098 SC. The 10 Years are based on the fact that both the Arcadian and the Star Calender of the Xianzhou use a System of 12 Months per Year. While taking into account that according to the Cosmic data Roaming Event it's been three years since the Trailblazer joined the AE Crew "Himeko: (Trailblazer), it's been three years since the Astral Express set off on this journey with you." As the current events happen in 1999 of the Arcadian Calender. Given that Himeko departed on her Journey 15 Years ago (1984 of the Arcadian Calender). Taking the Arcadian Calender as a Guideline for all events based on the Star Calender it means that 8098 SC corresponds to 1994/1995 of the Arcadian Calender. All based on the explanation that the Phantasmoon Games restarted 15 Years earlier, due to to the lack of Wishpower after the previous competition. It's important to note that based on my calculations taking real life (the release of the first Three Trailblaze Missions, within one yearm) into account, this means that the Trailblazer joined in 8100 SC or 1996 AC. According to the Wiki Welt, Void Archives, and Dan Heng boarded the Express sometime during or after December 8098 SC. Based on this Welt has been a Member of the AE Crew for 5 Years. So does Dan Heng maybe a little less.
"December, 8098 SC — The Xianzhou Yaoqing reports a resounding victory against Asmodeus' abominations.
Sparkle goes to Earth and recruits Vita to the Masked Fools.
A young Clara reactivates Svarog, who begins taking care of her.
Welt and Void Archives board the Astral Express for the first time.
Void Archives repaired "Shush" before he left, with Himeko's last words to him being "shush."
Dan Heng boards the Express after being exiled from the Alliance.
The crew encounters March 7th drifting in space, encased in Six-Phased Ice. After thawing her, she becomes a member of the Astral Express."
The context of these Events gives us one more date: March 7th 8099 SC, the day March 7th joined the Astral Express Crew. Which means the Express grew in strengh extremely fast. I took the Year 8099 SC because otherwise March 7th joining the Express would be considered part of the Present events on the given timeline. Anyways that means that, Sunday and the TB aside, the currently known AE crew came together within 4 months. With Himeko and March7th forming their known bond extremely fast. Maybe because March was the first Girl who joined the AE Crew.
"March 7th looks at herself in the mirror, imagining dozens of potential past lives for herself as she tries on the various outfits that Himeko had assembled for her." March 7th, Character Story: Part IV
Afterall Himeko was the one to pick out her outfits. Shown on the description of the light cone "This is Me!"
The girl could rock any outfit she chooses, but she was unsatisfied, judging by the dozen sets of clothing piled up behind her.
"Will this be the last outfit for today?"
She thought silently to herself and looked at the girl in the mirror. She looked extra happy on this day.
"Okay! This is me!"
With Himeko brushing March7th Hair, she's also the one ask "Will this be the last outfit for today?". Which means Himeko had the greatest Influence on the March 7th we know now.
Now reaching into territory of Headcanon/Assumption, i like the Idea that Himeko was the first one March 7th saw upon being freed from the ice. And thus bonded with to the point of them interacting the most.
Regardless, the Timeline shows that Himeko had to learn acting as a Leader, Guide and Parent extremely fast. Even if Welt and Dan Heng were mature enough. Because the Nameless of the Astral Express became a proper faction rather suddenly.
Edited on July 27th 2026 to make a correction regarding cycles in which the Phantasmoon Games Occur.
Edited again on August 3rd 2026 given that i'm incredibly bad at math and that i did said math based on a wrong assumption. There might be still parts that i'm wrong about. Regardless thank you to those who pointed towards issues in the timeline. Might edit this again,however i hope that it makes more sense now.












