Ame no Habakiri is a Shobu Zukuri style katana of medium curvature, its appearance analogous to that of its counterpart, Enma. Its all-light coloration is in accordance with its "heavenly" motif (contrasting the darkness of Enma). Its tsuba (identical to Enma's) is the shape of a trefoil, with each lobe thickly ridged (as is a central hole in each). The tsuka appears lacquered, being solid white (instead of wrapped in tsuka-ito), and is ridged by a pair of bands directly above the fuchi, as well as one higher up alongside two yet higher, far-apart lines of studs, all parallel. The kashira (singularly studded) is large, based in shape on a kumo (cloud) motif. The saya (colored the same as the tsuka) has a cord with two hanging, tufted ends (seemingly the sageo) a short bit below the tsuba, and is otherwise embellished by a triple set of flower motifs on each side (the pair near the cord six-petaled, the two below seven-petaled). The kojiri (like its counterpart) is large with trefoil cutouts on each side matching the tsuba, and is accented by a wide, knobbed ring above it.
As a masterpiece of Tenguyama Hitetsu, one of Wano's greatest swordsmiths and one of the 21 O Wazamono, Ame no Habakiri is an extremely powerful sword on par with Enma. According to its creator, it can "slice through even the heavens". In the hands of Oden, alongside Enma, Ame no Habakiri was able to bisect a mountain-sized beast known as the Mountain God in a single slash after Oden hardened them by using Busoshoku Haki (known as "Ryuo" in Wano). Ame no Habakiri was shown to be powerful and durable enough to clash against the Meito, classified as one of the Sajio O Wazamono, Murakumogiri.
Sometime in the past, Ame no Habakiri was created by Tenguyama Hitetsu which became renowned as his masterpiece as one of the 21 O Wazamono Meitos.
It later became the property of Kozuki Oden, along with Enma, both utilized in his Daito Nitoryu sword style since his youthful age of 18. After Oden's death, Ame no Habakiri was entrusted to its creator for safe keeping in order to pass it on as a heirloom onto Oden's son Momonosuke.
After Momonosuke time travelled into the future with his three retainers, they gathered in the Amigasa Village where Hitetsu presented his masterpiece Ame no Habakiri to him which Momonosuke refused to accept due to believeing he is not strong nor skilled enough to wield his father's designated heirloom.
The Ame no Habakiri (天羽々斬,Ame no Habakiri?, literally meaning "Snake-Slayer of Heaven") is one of the most famous Totsuka no Tsurugi, appearing in Japanese mythology as a blade used by the Shinto god Susanoo to slay the legendary monster serpent Yamata no Orochi. "Haba" (羽々,"Haba"?) is an archaic term for "big snake" (orochi).
Beside its legendary status, it is a real sword, being enshrined as the shintai of Isonokami Shrine.
In Chapter 920 and Episode 893, a flashback of Oden is seen wielding a sword with a tsuba different from either Ame no Habakiri or Enma's.
Ame no Habakiri's design, which lacks the traditional Japanese mountings, resembles a Gunto.