Isekai No Seikishi Monogatari Episode 1

The story is set in an alternate world called Geminar, where countries have fought endless wars with replicas of humanoid Seikishi weapons that they found in ancient ruins. 15-year-old Masaki Kenshi, the half-brother ofTenchi Muyou! protagonist Masaki Tenchi, is summoned from another world to Geminar.