Changes her voice during H scenes.
To go a bit more in detail what they do.
First option: JS or elementary schooler's voice
Second option: JC or middle schooler's voice
Third option: JK or high schooler's voice
Fourth option: JD or college girl's voice
Here's an H walkthrough of the various chapters:
1st event: Boy in forest.
1st way: Have her read blue book until she learns first two phrases (do not continue past this for later scene), play with ball until she sticks it inside her (may require H lvl to be 2-3 and white bar lowered), tell her it's correct and take ball out, visit boy. If done correct, she should stick his ball inside where he will try to retrieve.
2nd way: Same as above except do not take ball out, get her defense up some to survive, make sure her energy/hp are full and visit boy. If done correct, she will fail to stick ball inside and he will start spanking her as punishment, survive the spanking.
2nd event A: Getting on train.
Get her excitement high (easiest way is start H without letting her cum) and visit train, once she goes to sign if she's learned full how to read....that will take precedent and won't be able to do lewd version, if not she will start masturbating.
2nd event B: Train molester
Either have enough HP/energy to survive or high enough H stats that it ends instantly.
3rd event: Become an idol
side event 1 - Go to beach and with the guy lifting click his crotch (might need high excitement), click the sleeping girl.
side event 2 - In city, go to far left to start a blowjob battle with random guy.
side event 3 - Re-ride the train with max excitement, new scene with molester should happen (may need to have sex with her multiple times)
side event 4 - After doing se 1 or 2, an old man will appear. Go to his mansion and he'll have you prostitute yourself. Basically just have to survive until red bar fills or time run out. After two times, a boss will appear.
side event 5 - At the beach, click the island in the background and she'll swim to it. When on the island, talk to old man, use the mat til he's looking, talk again, use something to masturbate with and hell be wide eyed, talk again, use a different tool and he'll be floating up and down, talk to him one last time.
Idol event - Have her yellow stats high enough(may also need green and blue) to pass the first 4 photo shots. Have her masturbate with meat and tell her it's correct then do final event. She should masturbate with the meat.
4th event: Pro wrestler
side event 1 - At the old man's mansion he has new customers to take down. After finishing customers and 2nd boss, talk to him again for lesbian sex with idol manager. (can now view all pictures from idol event even some special ones)
Wrestler event - Have full excitement going into fight and she will turn the match into a sex battle.
5th event: Find da king
Slime battle - haven't figured this one out yet but I'm sure there's a lewd way.
Zombie battle - Fight with something weak and max excitement, she'll eventually grab the zombies tongue....thing. (Special song victory if you fight with rose, warning...it's long)
Orc battle - use the blue dildo sold from cloak guy in town.
i sems not to work like i did it 10/20 times and nothing changes when mastrubate his eyes only move ! 
