I notice you're asking for a specific manga chapter ("shounen ga otona capítulo 1 para leer" — Shounen ga Otona means something like "The Boy Becomes an Adult"). However, I don't have access to or the ability to reproduce copyrighted manga text.
2. Aggregator Sites (Spanish): If you are looking specifically for the Spanish translation ("para leer"), you will likely find it on "doujinshi" or "h-manga" aggregate sites rather than standard manga readers. shounen+ga+otona+capitulo+1+para+leer
Because this is a mature title, you will need to look in specific places. I notice you're asking for a specific manga
Si deseas leer "Shounen ga Otoma: Capítulo 1" (o una obra de nombre semejante) y no sabes cómo hacerlo legalmente y de manera segura, sigue estos pasos: sigue estos pasos: