You can find the official Japanese serialization and previews on platforms like Mecha Comic Sony eBook Store previous chapters to see how he ended up in that rainstorm?
If you're looking for detailed plot summaries or analyses, consider checking fan sites or communities dedicated to light novels and manga. They might have more specific information on the chapter you're interested in. You can find the official Japanese serialization and
Yuji spends time communicating with Proudwolf (the Slime). He discovers that while Proudwolf cannot speak human languages, they can share intentions and feelings through their telepathic bond. He experiments with commanding the slime to split and merge, realizing that the slime's consumption of materials can affect its properties. Yuji spends time communicating with Proudwolf (the Slime)
" (the Japanese equivalent of the Butterfly Effect)—has hit a high note in Chapter 3. " (the Japanese equivalent of the Butterfly Effect)—has
(Translation: “I Took Shelter from the Rain and a Legendary Dragon Became My Friend” – Yes, that’s the actual title.)