If you're interested in reading the series, I recommend checking out reputable online manga platforms or purchasing the manga volumes directly. Logolounge 13 Pdf
"Shounen ga Otona ni Natta Natsu" is a Japanese manga series written and illustrated by Izo Hashimoto and Jiro Taniguchi. The series consists of three chapters or "caps" as you mentioned. The K2 Korean Drama In Hindi Episode 1 Repack [SAFE]
As for subtitles or translations, I found that there are some online platforms and communities that provide fan-made translations of the series. However, I couldn't verify the specific quality or accuracy of these translations.