Farewell, we see each other for the last time...

The protagonist unexpectedly becomes a private tutor for a sheltered young lady. In the secluded space they share, their hearts and bodies gradually draw closer, eventually leading to a deep, intimate relationship. This is a full-fledged Live2D interactive touching game titled Natsuiro Lesson: The Last Summer Time by The 18th Chikamichi. Using the mouse, players can engage in real-time interactions such as petting her head, undressing her, fondling her breasts, and engaging in sexual activities. As you continue these interactions, her reactions will change based on the increasing level of affection.

After defeating the Demon King, the hero Edmond and his party rescue their beloved princess. However, with the Demon King’s demise, the balance of power he maintained shatters, and darkness begins to once again shroud the land.
On their way home, the party seeks a night of peace in a hot spring town. That very night, however, a wealthy merchant, a barbarian general, and other mysterious figures all set their sights on the princess.
Amidst a whirlwind of plots and temptations, will you be able to become the princess’s guardian, fight off desire and darkness, and lead her to true happiness…?

Second year at school, mid-July.
You've been dating your girlfriend, Ayaka Asada, for almost a year.
One day, after her soft tennis club practice match, Their bedtime phone calls begin to gradually change.
Their voices become more husky, they let out troubled sighs, their responses become slower,
There are more and more silences for no apparent reason...
 
Even when they meet at school, she seems uneasy, as if she's hiding something.
At the same time, she begins to show the protagonist a sexiness and behavior he's never noticed before.
A strange feeling he doesn't recognize.
Doubts he wants to deny.
But even so, everyday life quietly becomes distorted.
And on the final day, the relationship between the protagonist and Ayaka will change forever.

Sent on a perilous mission by the kingdom of Luminarium to slay the dark queen Arvenia, you find yourself her prisoner, forced to work as her slave within the now derelict castle. You believe your life to be at its painful end, as you expect to toil away serving her every dark whim.

... But all is not as it seems, the dark queen lives alone within her towering fortress, and she isn’t who, or what, you were told she would be.

Can you unravel the mysteries of the dark queen? Who is she really? What does she want from you?

…And will you even live to tell the tale?

Whatever you choose, her majesty awaits...

You are a hero summoned to another world, and your mission is to defeat the Queen of Lust.
Conquer four dungeons and challenge the Tower of Sealing.
This is an original battle where actions are taken in order of speed. Choose your commands carefully.
Even if you are in top condition, you may be defeated by a powerful attack from an succubus.
Friendly succubus do exist, but never let your guard down. What awaits you if you accept the succubus's invitation...