Anime·Catalogue
Cover art for Arms Alchemy
6.94Community score
from 8,841 ratings

CGood · #3,457

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武装錬金

Arms Alchemy

The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream. However, he soon finds out that dream wasn't a dream at all when a giant serpentine monster attacks him and his sister. Tokiko Tsumura, the girl he saved, explains that the monster is a homunculus. Kazuki had been attacked and killed by it when he was rescuing her. However, she, feeling responsible for him, revived him by placing a Kakugane medallion in his chest, serving as a replacement heart. The Kakugane, as Tokiko explains, is an alchemical device that, when activated, takes a certain form based on the Kakugane's user, forming a unique Buso Renkin. The Buso Renkin is the only thing that can destroy a homunculus monster. Using this, Kazuki creates his own Buso Renkin (the "Sunlight Heart", a huge lance). Along with Tokiko and her own Buso Renkin (the "Valkyrie Skirt", an execution scythe), Kazuki joins the fight against the homunculi and their master.

Names

Original武装錬金 (han)
RomajiBusou Renkin
EnglishArms Alchemy
Chinese武装炼金 (simplified · via bangumi)
Also known asBuso Renkin · BoRe · BuRe

Facts

FormatTV series · 26 ep · 24 min · 10h total
Aired2006-10-05 → 2007-03-29 (Autumn 2006)
StatusFINISHED
StudioXebec
SourceManga
OriginJapan (Anime)
DemographicShounen
GenresActionComedyFantasySupernatural
ThemesSchoolShounenMale ProtagonistMagicAlchemyFemale ProtagonistTomboy
StreamingHulu · Tubi TV

Reception

Community score6.94 / 10
Bayesian score7.04 / 10
Composite49.8
On lists26,772
Favourited299 (1.1%)
Completion78.9%
Drop rate8.1%
In backlog37.0%
Score spread σ1.72
MyAnimeList7.29 / 10

Score distribution

17227031884396583561,44372,50881,895987410560

Where it places

CohortValueTierRank
Broadcast seasonAutumn 2006C26 of 65
StudioXebecC43 of 112
Year2006C84 of 232
LengthTwo-courD429 of 699
EraLate 2000sC457 of 1,149
GenreSupernaturalD696 of 1,234
DemographicShounenD810 of 1,219
Season (all years)AutumnC936 of 1,921
GenreFantasyC1,062 of 2,142
GenreActionD1,449 of 2,765
GenreComedyC1,591 of 3,488
Source materialMangaD1,673 of 3,025
FormatTV seriesD1,679 of 3,322
OriginJapanC3,272 of 7,157

Key staff

DirectorTakao Kato, Takeshi Takadera, Shunji Yoshida
Series compositionAkatsuki Yamatoya
Character designAkio Takami
MusicKouhei Tanaka
Original creatorNobuhiro Watsuki

AniList id 1536 · MAL id 1536 · Bangumi 1274 · record updated 2026-08-27