archytele The Vault
Season guide

2.5 Dimensional Seduction: Season 1

24 episodes Premiered Jul 5, 2024 Updated Jul 30, 2026

2.5 Dimensional Seduction is a 2024 television series classified as animation and comedy, carrying a TV-14 rating. The story centers on Okumura, the president of the Manga Research Club, who spends his days alone in the clubroom declaring his love for his favorite two-dimensional character, Liliel, displayed on a screen. His routine changes when a three-dimensional girl named Ririsa Amano enters the clubroom and anno

Season overview

2.5 Dimensional Seduction is a 2024 television series classified as animation and comedy, carrying a TV-14 rating. The story centers on Okumura, the president of the Manga Research Club, who spends his days alone in the clubroom declaring his love for his favorite two-dimensional character, Liliel, displayed on a screen. His routine changes when a three-dimensional girl named Ririsa Amano enters the clubroom and announces her desire to become Liliel. Ririsa shares a passion for the cute and sexy costumes worn by characters in manga and proves to be a fellow otaku who loves Liliel just as much as Okumura does. She reveals that her secret hobby is cosplay and shares her passion by showing him a collection of ROMs filled with photos and videos of her cosplay work. As cosplayer Ririsa joins Okumura's manga club, the line between the two-dimensional and three-dimensional worlds begins to blur.

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Episodes

S1·E1

New Student from Another Dimension

Jul 5, 2024 · 24 min

Okumura may not be interested in 3D girls, but he's surprised when he discovers that he and Ririsa share similar passions.

S1·E2

Cosplay Group Potential?

Jul 12, 2024 · 24 min

Mikari is a new student at school and all the boys are crazy for her since she's a model. She also happens to be Okumura's childhood friend.

S1·E3

Lili x Miri

Jul 19, 2024 · 24 min

Mikari doesn't get why Okumura and Ririsa love cosplay, but she's willing to give it a shot if it means winning the heart of the boy she loves.

S1·E4

Time for Our First Event!

Jul 26, 2024 · 24 min

Okumura and Ririsa head to their first cosplay event, but all they can think about is how much this feels like a date!

S1·E5

First Event Is Over!!

Aug 2, 2024 · 24 min

Ririsa dazzles the entire venue with her amazing Lilliel cosplay, but now she and Okumura need to handle her newfound popularity.

S1·E6

Tips From a Master

Aug 9, 2024 · 24 min

There’s a special bond between cosplayers and photographers, one that Mikari can’t help but be jealous of.

S1·E7

We Need an Advisor!

Aug 16, 2024 · 24 min

The Manga Club needs an advisor or else Okumura and Ririsa will lose their club-room! The new teacher could help, especially since she seems very familiar.

S1·E8

Do You Love Cosplay?

Aug 23, 2024 · 24 min

Okumura and Ririsa don't want to hide their activities from the school and decide to participate in an upcoming cosplay event as an official club activity.

S1·E9

You're Not Liliel!

Aug 30, 2024 · 24 min

Nagomi is the star of the event, and her words shook Ririsa to her very core. Now it's up to Okumura, Mayuri and the others to restore her confidence.

S1·E10

Mayura vs. Nagomi!!

Sep 6, 2024 · 24 min

The legendary Mayura has returned, and now two Queens of Cosplay square off during the photo-shoot.

S1·E11

My Enchanted Armor

Sep 13, 2024 · 24 min

Nagomi realizes she can just have fun with cosplay, just like Ririsa. When the two cos-players meet later on, a new friendship blooms.

S1·E12

Five Rising Stars

Sep 20, 2024 · 24 min

The good news is that the Manga Club can keep the club room! The bad news is that their cosplay activities must remain a secret.

S1·E13

Can We Be Friends?

Sep 27, 2024 · 24 min

Nonoa wishes to befriend Ririsa, but the rising star of the cosplay world has a big problem: her social skills are non-existent.

S1·E14

Together with You

Oct 4, 2024 · 24 min

Okumura and Nonoa have a heart-to-heart. Perhaps it will give the shy cos-player the courage to clear up the misunderstanding between her and Ririsa.

S1·E15

I'll Keep Evolving

Oct 11, 2024 · 24 min

Ririsa and Nonoa have cleared up their misunderstanding and are now friends. While memories of her middle school experiences linger, Nonoa is determined to move forward.

S1·E16

Your Way, My Way

Oct 18, 2024 · 24 min

Aria certainly has potential, but her costume seriously lacks substance. Now, it’s up to the Manga Club to give her a crash course in cosplay and all things otaku!

S1·E17

Comrades in (Cosplay) Arms

Oct 25, 2024 · 24 min

Aria confides in the Manga Club about her estranged father and her passion for cosplay. Touched by her story, the club members vow to help Aria accomplish her dream.

S1·E18

Destiny

Nov 1, 2024 · 24 min

The Manga Club rallies around a devastated Aria after she breaks the news. Fortunately, Okumura can't help but feel there's more to the story than what Aria overheard.

S1·E19

Time for Summer Comiket!

Nov 8, 2024 · 24 min

The Manga Club arrive at Summer Comiket and are determined to give their cosplay their all. Unfortunately, cos-playing as a group is harder than it looks.

S1·E20

The World We Create with Our Friends

Nov 15, 2024 · 24 min

Coordination isn’t their only problem. The Manga Club must also deal with the bane of cosplayers everywhere: heat.

S1·E21

The Protagonist's Story

Nov 22, 2024 · 24 min

Ten years is a long time to dwell on guilt. An estranged father’s regrets, and a determined daughter’s wish are about to arrive at a crossroads.

S1·E22

This Wonderful World

Nov 29, 2024 · 24 min

Okumura and Ririsa happen to be alone together for once, but that doesn’t mean it’s now a date, right?

S1·E23

Manga Club On the Beach

Dec 6, 2024 · 24 min

Okumura realizes he needs to understand his friends more, and what better place to do so than at the beach?

S1·E24

2.5-Dimensional Ririsa

Dec 13, 2024 · 24 min

Love is messy and doesn’t work in real life like it does in anime. When Okumura overhears a heartfelt conversation, he worries what it means for the future.