Working at in during the period, Chōgi (長義) led the wing of the great workshop that absorbed Sōshū-den most fully. The carry several genealogical traditions for him: one holds him a descendant of Sanenaga, another makes him the son or younger brother of Nagashige, and several pair him with his brother Chōshige (長重), whose dated blades reach back to Kenmu while Chōgi's earliest signed work is Shōhei 15 (Enbun 5, 1360). His dated production then runs from the Jōwa and Shōhei eras through Kōryaku, with signed from Sadaji and . The explanations place him, together with Kanemitsu, as one of the twin pillars of the smiths grouped under the name Sōden-Bizen, the line worked through technique. He was also counted among the so-called Ten Disciples of Masamune, though the chronology of his dated work makes a direct apprenticeship difficult; the registers instead route his learning through Nagashige. The recurring formula of the states the position plainly: among blades, the smith whose work departs furthest from character is Chōgi.
The separate his hand into two modes, one in which predominates and one in which the of both and runs strong, and it is the second that the texts treat as his signature, pressing the manner further than Kanemitsu does. The forging is , often standing in and mixed with or , carrying thick and well-entered , with a faint that keeps the work legible as . The sets a foundation and breaks it into large-pattern , gathering , , forms, angular and pointed elements, and a mountainous ; and enter freely, the is mostly bright, and the fills with strong , , , and , at times rising into a -like effect. The enters in , thrusts up, and finishes pointed with . The is the broad Enbun and Jōji build, wide in with little taper and a long . To recognize his hand, the point to this flamboyant, -laden with its mountain crests and the "ear-shaped edge" ( no ) noted as characteristic. The texts gather his circle: the disciple Kenchō (兼長), whose unsigned carry still stronger than the master's; the brother Chōshige, read through a lower, calmer mixed with ; and Yoshikage (義景), variously placed as pupil of Kanemitsu or Chōgi or as a collateral line near Chikakage and Morikage.
A collector seeks Chōgi for the moment in which leaves itself: the wide form, the standing under faint , and the Sōshū-den fire of strong , and that the still anchors as Sōden-Bizen. The turns on these joined readings, the bold and the active edge together, with unsigned carried under gold-inlaid and signed and providing the anchor points. The named works record the standing of the line: the "Rokumata-giri," tied to Ōkubo Tadayo's stroke of Tenshō 2; blades transmitted through the Mito Tokugawa, the Tosa Yamauchi, and the Kuroda houses; and , including one of Kōchū valuing a blade at five hundred . In the register of the period Chōgi holds the place beside Kanemitsu, the master through whom entered and through whom Kenchō, Chōshige and Yoshikage carried the manner forward.