I thought, I do a run of all Layton DS games. It was tiring, but also fun. Sub 7 hours is definitely possible, if no short breaks during game changing splits. Surprisingly I PB'ed in 3 of the 4 games with this run. Don't really know, why I lost about half a minute in UF, but maybe that was the energetic low during this long run.

CV: JP Friendly Emu DB: JP Friendly Emu UF: JP Emu LS: JP Emu