yes its a Mpreg its full with haikyuu ships and fluff/lemon/smut.also in this au they are already 18+ so yeah from your Stressed author KaAshi

A Vampire Prince..who doesn't want to rule his kingdom so he runs away instead..𝙏𝙤 𝙩𝙝𝙚 𝙝𝙪𝙢𝙖𝙣 𝙬𝙤𝙧𝙡𝙙... Where he meets the love of his life.. FIND OUT HOW MORISUKE AND LEV MET! IN.. "𝓡𝓸𝓼𝓮'𝓼" 𝙄 𝘿𝙊𝙉'𝙏 𝙊𝙒𝙉 𝙏𝙃𝙀 𝙃𝘼𝙄𝙆𝙔𝙐𝙐 𝘾𝙃𝘼𝙍𝘼𝘾𝙏𝙊𝙍𝙎 𝙊𝙍 𝘼𝙍𝙏 𝙄𝙉 𝙏𝙃𝙄𝙎 𝙄 𝙊𝙉𝙇𝙔 𝙊𝙒𝙉 𝙏𝙃𝙀 𝘾𝙊𝙑𝙀𝙍!