This may be some overthinking/analyzing, but hey, it doesn’t hurt to try to figure things out when they throw in this much symbolism… I’ll be trying to keep this as spoiler free as possible with the information that we have up to episode 2.

I tried to identify what I could with flowers. For the flower language meanings, I tried to reference Japanese websites more rather than Western, considering the media is from Japan after all.

The reference I used for the flower language was mainly this website.

The blue petal that had dropped within Touko’s palm was grasped by Yuu’s thumb while Touko held Yuu’s hand more tightly. Meanwhile, the red petal is left behind Yuu’s hand.

If the petals are referring to their “Love,” then it might be a reference to how the both acknowledges Touko’s love for Yuu. On the other hand, Yuu’s “Love” is hidden behind her hand, so that could mean Yuu doesn’t recognize her own love and that Touko is not aware of it.

The flowers hanging from the classrooms don’t seem to be meant to be interpreted individually. Instead, it looks like of a representation of a wall that Yuu & Touko have built around them with the rest of the cast.

We can see some that each of the characters have an object next to them.

Touko – A picture frame

Sayaka – A cup of coffee

Yuu – A planetarium projector

Koyomi – Writing paper

Akari – A red anemone

The floor under each character have different items around them.

Touko – Yellow powder?

Sayaka – A flower bed.

Koyomi – A leaf pile?

Yuu – Water

Akari – White powder?

From what I could tell in the script is the following (aside from the few kanji I wasn’t too sure about).

…みんな音の( )思、

今の私が居なく( )しい…

そんなの(者)えもし( )た

私が(?)あ( )…

私のな(りた) い …？

…Everyone’s voice ( ) thoughts,

The present me disappears ( )

Such a person ( )

I will ( )

What I (want) to be ( ) …?

It’s a bit iffy, but the flower that Koyomi has in her hair might be a Yellow Gerbera.

In flower language it means “Warmth,” “Kindness,” and “Sunshine”. As for the one that she’s writing next to, I can’t even guess.

Update 10/17/2018 6:06PM EST

Thank you Shiroibara for letting me know in the comments the identity of the flower that’s next to her while she’s writing!ヾ(≧∇≦)ゞ

The flower is a Sea Holly which is also known as Eryngium, which has the meaning of “Secret Love” and “Seeking the light.”

For Akari, we can see her plucking a petal from a Red Anemone, which means “Forsaken love.”

She has a Red Primrose and a Purple Primrose tucked into her hair. A Red Primrose means “Merit without support” and “A beauty’s secret”. A Purple Primrose means “Trust.”

In a general sense, a Primrose means “Young love” or “An adolescent’s beginning and grief”

In this scene, we can see that Yuu disappears from the classroom as she gazes into the planetarium. We can also see that the door to the left is now open unlike how it was before. Despite disappearing, neither Koyomi or Akari notice Yuu’s disappearance, which may be reference to how her two friends are unaware of the relationship between Yuu and Touko as they are preoccupied with other interests.

In contrast, Sayaka notices the change in Touko as her coffee ripples and tries to reach out to her, but the flower wall separates her from Touko as she disappears out of the room just like Yuu did. The background also shows the door has been opened as well. An interesting touch is that the the picture frame that Touko was facing earlier is now facing down on the table.

Nothing beats flowers wilting huh. I’m sure most can tell this is not gonna be a cute & fluffy ride all the way based off this opening.

In this scene, we have see light shining down on Yuu and water flowing down the stairs.

It looks like we have some Wisteria hanging from the ceiling. A Wisteria means “Kindness,” “Welcoming,” “Will never leave your side,” “Intoxicated with love,” and “Steadfast.” As for the other flowers beside the Wisteria, I’m also not sure. Surrounding her in the water are paper cranes, which may be a reference of her wish to be able to fall in love.

Interestingly, when she raises the flower pamphlet up to her face, we can see it begins to reflect Touko. Perhaps it’s a reference of what she feels for Touko?

Meanwhile for Touko, you can see she’s standing in the corridor, standing right on top of a straight line. I wasn’t really sure about the flowers hanging from the ceiling. In terms of shape, they resembled a Red Spider Lily, which means “Sad memories,” “To resign oneself,” “Self-support,” and “Passion.”

We can also see that when she raises the flower pamphlet it reflects Yuu as well.

Since it looks like the flowers on the pamphlet is different from Yuu, I have the impression that those flowers are a reflection of her feelings toward Yuu. Seeing that there seems to be a Rose there, which typically defaults to “Love” even without me looking it up.

In the final sequence, we can see both of them surrounded by Hydrangea, which means “Whim, “Indifference,” “Strong patience,” “Cruelty,” and “Proud.”

Their body then turns and is wrapped in (poison?) ivy and their hands seem to have become Nandinas. Nandina means “My love keeps on growing,” and “A good family”

Touko’s end flower looks like it might be a Chrysanthemum, which can mean “Noble” and “Purity.” A White Chrysanthemum means “Truth.”

Yuu’s flower resembles a Evening Primrose, but I’m not that sure either. The meaning of an Evening Primrose is “Silent Love” and “Fickleness.”

Update 10/15/2018 7:34PM EST

Thanks deltasa333 for commenting on other flower possibilities ｡+ﾟ.。+。(´ω｀*)♪♪

It looks like the Yuu’s flower may actually be Dogwood, which means “Persistent,” “Returning a favor,” “Please accept my feelings.”While Touko’s flower may be a Dahlia, which means “Magnificence,” “Elegance,” “Dignity,” “Frivolity,” and “Instability.”

If your own observations, or maybe you saw mistakes, or by chance know what the flowers are, feel free to comment 🙂

I’ll most likely make a new post with more interpretations of the OP after more episodes come out, since I don’t want to spoil you guys 🙂