Friendly Alien Neighbour's manga / #younger seme/older uke(14)

Akutai wa Ude no Naka de Futatabi

Complete | fujiyama hyouta | 2009 released

Hitotsu Futatsu Himitsu

Complete | SASAMARU Yuuge | 2012 released

Akutai wa Toiki to Mazariau

Complete | fujiyama hyouta | 2005 released

The seme is psycho but isn't the uke suspiciously too accommodating? Either he realized that the seme is mostly harmless or he is just as weird as the seme. Anyway, interesting story.

Hanagaya Eigyousho No Kare

Complete | tenzen momoko | 2000 released