Complex sentence: Shounen Ai no Bigaku (少年愛の美学) is a bimonthly manga compilation authored by shotacon artists in Japan; it is a publication for drawn pornography that depicts prepubescent children in sexual situations.
Split into simpler sentences: Shounen Ai no Bigaku (少年愛の美学) is a bimonthly manga compilation authored by shotacon artists in Japan. In other words, it is a publication for drawn pornography that depicts prepubescent children in sexual situations.