- 2014-01-31 Prototype band ABSOLUTE TERA.F (アブソリュートテラ.F) is formed by ex-SUZAKU (朱) bassist 絆-kizuna- and performs at king zeebra sponsored event, king zeebra Shinshun 【Hatsu】 Matsuri 2014 (king zeebra 新春【初】祭 2014) at Ash OSAKA. During the live, it is announced that ABSOLUTE TERA.F members will form official band ISORA after their next live.
- 2014-03-09 Prototype band ABSOLUTE TERA.F holds their last live at Musoukai (無双会) sponsored event, Shinsaibashi Bakuon Matsuri ~Naniwa Hatsujouriku~ (心斎橋爆音祭り~なにわ初上陸~), at Shinsaibashi (心斎橋) soma.
- 2014-03-09 ISORA (イソラ) officially forms under label king zeebra.
- 2014-03-25 Vocalist syuuya (秋夜) fails to appear at a band meeting and deletes his Twitter and Ameblo; his only communication with the other band members is an email saying “Sorry.” Consequently, syuuya is fired from the band.
- 2014-03-29 ISORA holds their first live and sponsored event, other dimention, is held at Ash OSAKA. As vocalist syuuya had been fired days previously, support vocals are provided by Kikyo (祈狂), 大介-daisuke, and Ryou (亮).
- 2014-04-06 Guest vocalists: Daisuke (大介) [ex-GALLMAZZO] and Ryou (亮) [ex-KOKUYOKU (黒翼) ~ Gekisou! Sakamoto Kin-puИch. 24ji (激走!坂本金八24時)].
Karen (火憐) [ex-
SUZAKU] becomes support drummer.
- 2014-04-16 Guest vocalists: Daisuke (大介) [ex-GALLMAZZO] and Ryou (亮) [ex-KOKUYOKU (黒翼) ~ Gekisou! Sakamoto Kin-puИch. 24ji (激走!坂本金八24時)].
- 2014-05-11 Guest vocalist: Daisuke (大介) [ex-GALLMAZZO].
Guest vocalists: Saica (槐) [
the:Ø] and Hyo (豹) [Shellmy].
- 2014-05-14 SOUND OF NOISE 2014 released.
- 2014-05-20 砂希-saki- [Delia] becomes ongoing guest vocalist.
- 2014-06-08 Toriko released.
- 2014-06-26 Sponsored event, Himitsushugi (秘密主義), is held at Ash OSAKA.
- 2014-07-06 Guest vocalist: nagi (薙/なぎ) (EINESEELE (アインゼーレ)).
- 2014-07-23 Sponsored event, Ikuu Ennichi ~Kizuna~ (異空縁日~絆~), is held at Ash OSAKA.
- 2014-07-23 Guitarist 空-ciel is hospitalized and absent from live performance.
- 2014-07-30 Guest vocalist: nagi (薙/なぎ) (EINESEELE (アインゼーレ)).
- 2014-08-02 Guitarist 空-ciel is fired.
- 2014-08-26 Vocalist 砂希-saki- joins.
- 2014-08-28 Sponsored event, REBIRTH OF CAGLIOSTRO, is held at Nishikujo (西九条) BRAND NEW.
- 2014-12-05 Threeman with DISGUST and CielGrave, Butterfly Effect, is held at LIVE HOUSE D'.
- 2014-12-25 ISORA (イソラ) changes name to Mischievous.
- 2015-01-28 Mischievous 1st TOUR 『a doze show』 begins at QuaLiA last live sponsored event at Shinsaibashi (心斎橋) soma.
- 2015-02-14 1st TOUR 『a doze show』 ends at TOUR FINAL at Nishikujou (西九条) BRAND NEW. An important announcement is made: the band will release their first CD.
- 2015-04-28 Sponsored event, Hana KusaRE Kinkakubyou ・ Hasshou (花腐レ菌核病・発症), is held at Nishikujou (西九条) BRAND NEW.
- 2015-05-25 Sponsored event, Hana KusaRE Kinkakubyou ・ Monen (花腐レ菌核病・蔓延), is held at Nishikujou (西九条) BRAND NEW.
- 2015-06-30 Sponsored event, Hana KusaRE Kinkakubyou ・ Makki (花腐レ菌核病・末期), is held at Nishikujou (西九条) BRAND NEW.
- 2015-07-08 AZALEA released.
- 2015-10-09 Mischievous holds oneman, Gloomy Puppet Show✦✦✦, at Osaka LIVE HOUSE D'. i
- 2015-10-09 snowwhite released.