Blurb One:
Matsuda dies, then comes back to life, only to come face-to-face with the baby-faced version of some blond jerk.
Matsuda: "How the hell did you become my childhood friend?!"
Furuya Rei: "Hey, it's me. Not happy?"
Furuya Rei: "Good! Why is my childhood friend in this life a curly-haired jerk?!"
There's no time for sadness. The two of them immediately fight until the sky and earth grow dim. The tiny blond and curly-haired boys sit back to back on the ground, short arms and legs, utterly despairing, their desire to see their respective childhood friends stronger than ever.
Mysterious Force: "Brave officers, the people of another world are sending you their heartfelt wishes. May you get what you want and live happy, regret-free lives. You've been given a chance to start over, and a System will help you achieve your wishes."
Furuya and Matsuda: "Maybe it's not so bad... ?"
Mysterious Force: "Ta-da! The Romance System is at your service. Please choose from the following missions. A friendly tip: your odds of success are higher if you complete them all!"
[Discover more of your childhood friend’s merits through spending every day together, and turn what you take for granted into a flutter of your heart!]
[Skip class together and enjoy the youth of being chased by a teacher hand in hand!]
[The fireworks festival is about to begin. Put on a suitable yukata and go on a fresh date with your familiar someone!]
[Your childhood friend has caught the eye of a newcomer from the heavens. Be brave, defeat your rival, and win back your childhood friend's heart!]
Hiromitsu and Hagi, identified as rivals who came out of nowhere (with no memories of their past lives and no idea what's going on): "Zero/Matchan, what exactly is going on between you and Matsuda/Little Furuya...?"
Furuya and Matsuda: "It really can get worse! Our lives are about to plunge into an abyss! What kind of salvation is this?! Did you just randomly pick people for this?! Why did I get stuck with a curly-haired/blond jerk?!"
Furuya and Matsuda: "How did it come to this? Getting a second chance is a good thing, and we might even be able to save our friends. Two happy things together should bring even more happiness. It should all be a dream come true. But why does this life start with me becoming childhood friends with this guy, and why do we have to do these shameless missions...?"
Blurb Two
After receiving confessions from their childhood friends from their previous lives, and realizing their own feelings, Furuya and Matsuda successfully start dating their original childhood friends. Gritting their teeth, they're ready for the punishment.
[Green Hat LV99 achieved], reward issued.
Furuya and Matsuda: "We asked you for a reward, not an orgy! Don't drag Hagi and Hiromitsu into this too!"
Things get even worse! Even after they take their relationships with their original childhood friends beyond friendship, the missions continue, but now they have to do them with their current childhood friends.
Current childhood friends Furuya and Matsuda: "Thanks, I hate it. What did childhood friends ever do to you?! Apologize to childhood friends, will you?!"
Couples: Hiromitsu/Furuya + Hagi/Matsuda. Childhood friends are swapped, turning friends into rivals in love (?)
Theme: Childhood friends are the best, forever