In Kinai region (the five capital provinces surrounding the ancient capitals of Nara and Kyoto), Hongan-ji Temple was based in Yamashina, Kyoto and as it became influential due to the Ikko Ikki, Harumoto HOSOKAWA, who feared its military power, attacked and set fire to Yamashina Hongan-ji Temple in collusion with the Nichiren sect in September, 1532 (the Battle of Yamashina Hongan-ji Temple/the Tenbun War/the Tenbun Hokke War).
畿内では本願寺は京都山科を本拠としていたが、一向一揆を背景として本願寺の影響力が強くなると、その武力を恐れた細川晴元は日蓮宗徒らと結託し、天文(元号)元年（1532年）8月に山科本願寺を焼き討ちした（山科本願寺山科本願寺の戦い/天文の錯乱/天文法華の乱）。