Mujaki no Rakuen
- Nama Alternatif: Paradise of Innocence
- Tahun Rilis: 2011
- Author(s): URAN
- Artist(s): URAN
- Genre: Adult, Comedy, Ecchi, Harem, Lolicon, Romance, School Life, Seinen
- Sinopsis: Shouta Handa, a 25-year-old NEET, is mocked by his former female classmates who've all become successful, at their class reunion. A mysterious incident at the school pool throws him back in time and lets him deal with those same classmates back when they were fifth grade girls.