Mystery solved.
So I ended up using pen... while it just turned out that my laptop's preview had color adjust setting and there I could (finally) adjust its exposure+. Work of coincidence... Below is another 10-minute piece. Very & vexingly/annoyingly 'snobbish', but can't help it. Longtime habits go hard. Personally I was just thinking how I would've ended up (*hypothetically) researching about Japanese EQ's (and yes emotional quotient), say that I WAS the scientist & was given the opportunity. ..Like, will it make all the 'Korean madness' I've endured over the years (never mind some 'legal issues' I've caused back then. Will tell later...) go away? Starting from school bullying (학교폭력), to major issues like Brother's Home (형제복지원) where my hometown was right in proximity where all the disaster have occurred in 80's..... While I pretty much can guess all those independence fighters from my birthplace's history book be more than skepti...