Alright I'll like to address some small bugs and glitches in the game, which (fairly certain) allowed me to achieve 78 Lust at the end of Day 2 and (100% certain) allowed me to just hit 79 Lust on my most recent attempt.
Basically I've had to really scramble my head over this, but I think I got why I was unaware of the bug the 1st play through. So my run through for 78 was almost exactly the same as SwordSorcPorn stated on post #476, only I got 20/20 for Day 1 and avoided the extra 10 bucks. Now from what I can gather was the only difference: Instead of Daydreaming in class and getting the question right (to avoid -1 Lust from Maddy), I avoided the daydream and put my hand up to answer. This apparently gave +1 Lust from the School teacher Teagan and -1 from Maddy, however I don't think the -1 affected my score negatively - If someone else wants to try this to confirm my findings?
Now for 79 Lust
This bug I found while attempting to recreate my 78 Lust run and found that you can run into the old lady on the bus more than once! So after avoiding the gym at school to save yourself a legitimate 1 hour the player can travel to town....do nothing....then travel to the beach run through; the player can repeat the journey after traveling to their home street. Therefore creating $60 to afford the swimsuit for Halle and Katsumi, while still having the +3 lust from not excepting Chiyo 10 bucks.
Upon completing the town and beach segment the player can return to town (only for the MC to automatically state that you should travel home in time for dinner). Though it is already 20:00 at this stage, so you return home at 21:00, allowing you to still hit both the convenience store and Auntie’s house (in any order). Thus returning home at 23:00 only for the clock to jump back to 20:00 illegitimately saving 3 hours.
Therefore 77 is the most a player can achieve without bending the laws of physics lol