Vino, a member of the A-class adventurer party Assault, is a potion user, the weakest and lowest level job. He meets a beautiful swordsman named Canadia, who is known as the God of Death. He was kicked out of the party and nearly died in a monster attack, but Vino awakened by chance with the single-minded desire to protect her! He discovered his own strong shoulders and a new way to use potions, even throwing potions to blast monsters to pieces.

At the age of 200, he was supposed to accomplish one final great feat and bring his long life to an end… or so he thought. But when he opened his eyes, he had become a baby!Thus begins his second life as Cross Elphid. Unlike his lonely previous existence, he now resolves to live differently—saving the weak and supporting one another through the bonds he forms with many people.A princess who is the strongest of knights, a beautiful young alchemist from a prestigious potion-making family, even a female hero who wields the power of lightning…While spending sweet, heart-fluttering days with these girls, he fully utilizes the 200 years of experience from his past life—and once again dominates the world with his cheat-level abilities!?

High school student Kogure Ryoma receives love advice from his childhood friend and best friend, Hirasawa Shishi. Although Shishi is quite popular, he was indifferent to romance, so Ryoma is surprised by Shishi's abrupt confession. When he learns that Shishi has feelings for a quiet girl in their class, Ootsuki Shizuku, he decides to help his friend! While looking into information about Shizuku for Shishi, Ryoma is suddenly called out by the most beautiful girl in school, Asahina Arisa. As Shizuku's best friend, she mistakenly believes that Ryoma has feelings for Shizuku! Due to Arisa's misunderstanding, Ryoma finds himself caught in a whirlwind. As Ryoma and Arisa gradually grow closer, what awaits them at the end of their friendship and budding romance? This is a youth romantic comedy that begins with friends supporting each other's love!