Dr. Stone Vol. 2

Everyone in the world has been turned to stone, but all Ooki can think about is his crush on fellow high school student Yuzuriha. Trapped inside his stony prison for thousands of years, only thoughts of his love keep him going, but when he is finally freed, he discovers only himself and his friend Senku have survived. The two boys decide to rebuild the Earth anew in this exciting sci-fi manga from Riichiro Inagaki.
In Vol. 2, Ooki, Senku, and Yuzuriha are proceeding with their plan to create gunpowder when they notice distant smoke on the horizon. The trio decide to send off a signal themselves, though if there are other humans out there can they trust them?
Notice: This manga is written in Japanese.