: The phrase might be referring to a specific anime or manga series titled "The Summer When the Boy Became an Adult" or something similar. There are many shonen anime and manga series that explore themes of growth and maturity.
: While Ryuuki is watching one of Kiriru’s videos, the actress miraculously appears before him in person. shounen ga otona ni natta natsu ep 1 verified
A high school football prodigy navigating a summer of self-discovery. Reiko/Rinko Older Sister : The phrase might be referring to a