After you beat many if not all of the lessons provided by the girls, they will present you some challenges. Do not fret, they are not hard to do - and you probably will be enthrilled to do so.
For each challenge, three basic skills are required. You can see these on the left part of the screen, under the challenge selection box. You need to select these at least. In case you miss one of these, the skill on your pool of learnt skills will flash. You will not be able to proceed otherwise.
Most of the challenges will have the three different types of skills. On the four star challenges, you will start with the service action (yellow background skill tile), then you will move into the foreplay one (pink background) and a success move will be achieved with the penetration one (blue background).
Each challenge has a pass and a fail requirement. This wiki page explains the pass requirements. The fail requirements usually has the male failing while cumming (missing the red zones on the male gauge).
A number of challenges require the male to cum either a number of times or with a powerful one with a number of "stock", as in you can chose your preferred method. These stock are the little boxes that are placed under the male cum bar. Each time a male cum bar fills, a new stock is lit. In order to use more than one stock at a time while cumming, you need to long press on the Ejaculate button.
Both male and femail can cum at the same time. If you also have the wet bar full, the female cum counter filled, and the feeling number at 300%, it will be considered "Ultimate cum". This action yields a nice bonus. In order to cum at the same time, you need to time the female and male bars such that the female one is maxed while the male one stock is also filled. Be aware that it has to be the girl the one that is maxed first. In order to achieve this feat, you will need to control your speed. The easiest way is to regulate the female one by changing the speed level and intensity, as only a given combination will increase her bar.
Please do use some of the game modifiers that you earnt during your lessons or challenges. Some of them are useful in these challenges, as they will affect how hard it is to hit the ejaculate "just" region (slow gauge and very slow gauge) or the speed on which the wet bar rises.
You can use any girl for any challenge. Any challenge beaten with any girl will be set as completed but for the last one. In this one, the ending dialogue will differ depending on which girl you use, so please try the three of them.
Objective: ejaculate with Paizuri move 3 time (pink skill last icon)
At first you have to gain your control by raising your mood level equal to the girl's one. Move the girl into the lying position. Finally pick the cock item in the left menu and click on her breast (In Foreplay Mode the cock item is an arrow). Ejaculate 3 bars on her breast and you will complete this challenge.
Challenge 1-2: Illamatio Challenge
Objective: ejaculate with Illamatio move 3 time (pink skill blowjob icon)
Use red icon position and click male simbol icon then click at her mount and cum with 3 stock
Challenge 1-3: Fellatio Challenge
Objective: ejaculate with Fellatio move 3 time (yellow male-female symbol icon)
Use the "Service mode" fellatio the choose fellatio icon and wait till you get 3 stock and cum
Challenge 1-4: 69 Challenge
Objective: ejaculate with 69 move 3 time (yellow 69 icon)
use 69 in "Service mode" and cum 3 with 3 stock
Challenge 1-5: Handjob Challenge
Objective: ejaculate 3 time with handjob move (yellow handjob icon)
use Handjob in "Service mode" and cum with 3 Stock
Challenge 1-6: Footjob Challenge
Objective : ejaculate 3 time with Footjob (yellow foot icon)
you can ejaculate any number of stock on any mode or any position...only have to hit JUST 3 time
Challenge 4-2 All Skill Leaking Challenge
requirement : cum with leaking with all 3 mode (Foreplay / Service / insertion) 3 time / stock
make girl Wet 100% and switch to all 3 mode and cum with 3 stock
1. Get the girl to Wet 100%, doesn't matter how you get it.
2. Cum 3 stocks in EACH MODE. Doesn't work when you only cum 1 stock in every mode.
3. Also for the Service mode,the Girl on Top doesn't count for some reason. Try using other than this service mode.
Challenge 4-3 Cum together Challenge
requirement : make cum together once
to make cum together make feeling to reach 300% and make girl cum once ...or you can make her cum 3 time after feeling is more than 100% till she got all 3 pink stock above her status bar ...then fill male stock with all 9 and nearly or full bar then make her cum again ...this will empty all male stock ...make girl in Synccope stage and reduce girl feeling to 50. If ejaculate doesn't automatically occur, manually ejaculating while she's still in Synccope will meet the challenge requirement.
This challenge can be cleared with each girl individually to complete, but the bonuses will be awarded for the first.
The Challenges tab appears on the Selection Screen after completing all Examinations from the Lessons tab. Each of these require a set of one Foreplay, Service, and Sex Skill to be included in the Skill Grid, and are rewarded with various Special Skills.
Fail conditions for all Challenges:
Girl's Pleasure reaches 0
Misfire maximum Ejaculation
Miss Ejaculation timing 5 times for 1-Star Challenges, 4 times for 2-Star Challenges, 3 times for 3-Star Challenges, and only twice for 4-Star Challenges