Taking My Junior Sister Through Time to the Alchemy Room of Taishang Laojun

Lin Feng, a doctoral candidate in the Department of Chemistry at Kyoto University, was working on the final demonstration of his doctoral thesis in the laboratory. While helping, three junior sisters were watching him for fear of making a mistake. However, an accident happened and the experiment exploded... The four of them simultaneously traveled to the elixir room where Taishang Laojun exploded in the immortal world... And began to cultivate immortality.