Kaidō Rinjō 快道林常 (1751 – 26 March 1810), birth-name Rinjō 林常, was a Japanese Edo-period (江戶時代) Shingon Buzan-school 真言宗豊山派 scholar-monk, the foremost late-Edo Abhidharma scholar. He resided and taught at the school’s head monastery Hase-dera 長谷寺 in Yamato. Wikidata Q11491419. DILA Authority A000506.
His principal contribution is the thirty-fascicle 阿毘達磨倶舍論法義 Abidatsuma Kusharon hōgi (KR6l0026, T64n2251), a running commentary on Xuanzang’s translation of Vasubandhu’s Abhidharmakośa-bhāṣya (KR6l0023) — the most philologically detailed of the Edo Kusha-gaku 倶舎學 commentaries. He read the Kośa against Paramārtha’s earlier translation (KR6l0028) and against the Mahāvibhāṣā, repeatedly emending and identifying interpolations; he frequently and pointedly criticizes the Tang commentators Puguang (普光) and Fabao (法寶).
Kaidō represents the Shingon contribution to the Tokugawa Abhidharma revival; with Tan’e (湛慧) of the Pure Land school and the slightly earlier Fujaku 普寂 (1707–1781) of the Tendai school, he forms the canonical Edo Kusha-gaku triad. His Hōgi has remained the standard Japanese reference commentary on the Kośa into the modern philological-Indology period.
Source: Wikipedia.ja 快道; Bukkyō daijiten; 木村宣彰 Edo-jidai Kushagaku no kenkyū (Kyōto, 1992).