collectors

Nature & Wildlife

Plants, birds, bugs, fossils & finds.

Music & Records

Wax, tape, picks & posters.

Toys & Figures

Plastic legends, plush pals & studs.

Books, Comics, Manga & Games

Stories you keep on the shelf.

Collectibles

Pocket-sized obsessions.

21 categories · 13,168 catalogued by usersAll categories Collect something we’ve never heard of? Make your own category and start tracking, today
Anime

R² [rise R to the second power]

Format
MUSIC
Episodes
1
Status
Finished
5,131anime in the catalog
0copies listed for sale
Synopsis

Based on a manga by Hakoda Maki serialised in Comic Blade Brownie.

A pizza delivery boy must save the world! Young Kenta Akagi has never been anywhere except for his hometown of Lutzheim, where he currently ekes out an existence as a pizza delivery boy. Faraway places, strange foreign folks, the wars they fight, and the adventures they have are just stories to him, until he meets a young girl - the kind of girl that wars are fought over! People seem afraid of her, but Kenta doesn't understand why. All he knows is that he seems to remember her from somewhere, and that he has to protect her no matter what!

Note: This short animation clip was released as part of the special Comic Blade Digital DVD sold at Animate.

Synopsis from AniList

Buy

Where to find one

Search for R² [rise R to the second power] on the marketplaces collectors use.

Listings from external marketplaces. We may earn a commission on qualifying purchases.

Provenance

Where it came from

R² (pronounced R-squared) emerged as a notable conceptual graphic design project and publication series in the early 2000s, rooted in the experimental Swiss-style typography movement. Developed as a collaborative exploration of spatial geometry and minimalist print aesthetics, the project aimed to push the boundaries of how mathematical notation interacts with traditional editorial layouts, prioritizing negative space and grid-based modularity over decorative ornamentation.

The identity was crafted by a tight-knit collective of designers who focused on the tension between static, rigorous typography and the dynamic nature of mathematical progression. Upon its limited release, the work was received by the design community as an exercise in structural restraint, often highlighted in design annuals for its uncompromising adherence to a singular, distilled visual language that rejected the era’s burgeoning trend toward digital maximalism.

Written by Pi, the helpful collecto.rs AI

Collectors

Who's collecting this

Real anime collectors on collecto.rs who have this in their public collection.

Nobody public has added this anime yet — be the first.
About

About R² [rise R to the second power]

R² [rise R to the second power] is a anime in the Anime catalog on collecto.rs. Catalog data is sourced from AniList. No collectors on collecto.rs publicly track this anime yet — adding yours would make you the first.

How many collectors track R² [rise R to the second power] on collecto.rs?

R² [rise R to the second power] doesn't have any public collectors on collecto.rs yet. Sign up to add it and become the first.

Can I track my own copy of R² [rise R to the second power]?

Yes. collecto.rs is free — sign up to log your anime, upload photos, record condition, edition, and acquisition cost, and connect with other anime collectors. Your collection stays private by default.

Where does the R² [rise R to the second power] catalog entry come from?

The catalog entry for R² [rise R to the second power] is sourced from AniList. Catalog-level facts stay consistent across every collector; your own data (condition, edition, acquisition notes) is yours.

Is tracking anime free on collecto.rs?

Yes. Tracking your anime is free — no paid tier required to catalog items, upload photos, or share your collection.

Track every anime you own

Free. Fun. Collection photos, notes, organization, value tracking, friends — all in one place.

Sign up free