Tutor: a Drop of Water Turns into a River

Fourteen-year-old Sawada Tsunayoshi was supposed to be just the most ordinary good-for-nothing boy in Namimori Middle School. An unexpected rift in time and space threw him into Italy hundreds of years ago. A young man with no language skills and nowhere to go was picked up by Shizuku Kawahira by the river, and he strayed into the era of the first generation of Vongola. He learned to survive in the flames of war and smoke, learned to hold a knife, settle accounts, tie knots, and also learned to subconsciously stand in front of others when danger came. After ten years of companionship, Shizuku recorded every injury and every growth for him, and also guarded a pendant of water drops that was always warm for him. But fate never takes things too lightly. When the crack appeared again, Tsuna was "returned" to the original state - his body returned to the age of fourteen, but all ten years of Italy's memories were taken away, leaving only the drop of water on his chest, which was still warm and quiet. Hundreds of years later, Shizuku, who had survived one life after another, came to his time, changed her name to "Mio", and became a medical teacher at Namsei Middle School. She watched him score thirty-six points in the exam, watched him be forced to confess by the death bullet, watched Gokudera, Yamamoto, Hibari, Liaohei, Rambo and others gradually gather around him; she also watched him go from a good-for-nothing boy who desperately tried to escape from sex to being forced to move towards the position of Vongola's tenth generation. Intention: People who should be met will always be met