While surprised by the differences from his previous world, Touya is growing accustomed to living in the new world with his smartphone. Together, he, Elze, and Linze accept a mission to head to the Royal Capital.
Along the way they encounter a young samurai, Yae, who dropped all of her travel coins, a currency in the new world. After treating Yae to sate her hunger, Touya grows worried about his own savings due to how much she eats. Afterward Yae joins their party to repay the favor, and their traveling group encounters Sushie, heiress to a duchy, under attack.
He can use my own Boost, 
not just Elemental magic.
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Du kannst nicht nur Elementarmagie benutzen,
sondern auch meinen Boost.
Puede usar mi Boost,
además de la magia elemental.
Puede usar mi Boost,
además de la magia elemental.
En plus de la magie élémentaire,
tu peux sûrement utiliser mon Boost.
Non solo sai usare le magie elementali,
Ele não só magia elemental, como 
também conseguiu usar meu Boost.
Ты ведь можешь использовать не только
магию элементов, но и даже мой «заряд».