- 2016-08-31 LACK-CO. is announced as ex-NEGA guitarist SAN's new band. Information is to be revealed on 2016-09-15.
- 2016-09-15 LACK-CO. lineup is revealed, and officially starts activity.
- 2016-10-01 Ayashii Meganeya-san Limited Edition released.
- 2016-11-03 “Demonstration” first live and 150-person-limited, two-part oneman, Chakusui no Tame NO Junbiundou (着水の為ノ準備運動), is held at LIVE HOUSE Sugamo Shishiou (巣鴨獅子王).
- 2016-11-09 Ayashii Meganeya-san Type A released.
- 2016-11-09 Ayashii Meganeya-san Type B released.
- 2016-11-25 First sponsored event tour, Aki no Kaisui Yokujou Yuuei Tokku (秋の海水欲情遊泳特区), begins at Osaka (大阪) RUIDO.
- 2016-11-26 First oneman tour, Hajimete no Chakusui (はじめての着水), begins at Shinsaibashi (心斎橋) paradigm.