just saw someone's tags wondering about the whole "conatus" thing on the teasers, which I was curious about as well
on a website that sells a.c.e's album, the explanatory text translates to: "In addition to deep considerations of the 'reasons for existence', this album portrays 'Conatus', which is the essence and core power[/energy] of all beings, as a love story and releases[/unwinds] it through A.C.E's characteristic comfortable music."
more details under the cut
as for how they got this idea: idk, but if you look for the Korean word 의욕 (=drive, willingness to work, motivation) on Naver dictionary, you get 'ambition' and 'morale' as English translations first (which are both p vague) and then there's 'conatus', so maybe beat's people decided this matched their intended meaning the best
if you look up the English (/Latin) word 'conatus' itself, you'll encounter a philosophical term that was interpreted in a fairly wide variety of ways over the centuries but apparently boils down to persistence, self-preservation and/or drive
here's the original Korean text from that website that I translated above:
"이번 앨범은 ‘존재의 이유’에 대한 깊은 고찰과 더불어 모든 존재의 본질이자 핵심적인 힘을 의미하는 코나투스(Conatus)를 러브스토리에 담아 에이스 특유의 편안한 음악으로 풀어 내었다."