There is some extremely NSFW artwork on the Ecchymosis Bandcamp page, so I will quote for you the greatest bio of all time:
Formed in Jan 2014 by Weerasak and Polwach. Twish joined in Oct 2014. Signed to NSE in Sep 2015. Wasumit joined in Nov 2016. Jeeraset joined in August 2018. Fuck long bio.