Tokyo: Fusion Goddess

Tian Lan traveled to the parallel world of Tokyo. People in this world may awaken the ability to summon when they reach the age of eighteen. You can summon gods, monsters, elves, and even monsters from urban legends. Tianlan also awakened the entry fusion system, which can obtain special entries for synthesized people and things. [Weather Wizard] + [Stand-in] = [Weather Forecast] The entry for the wooden sword is [Oak Sword Carrying Sweat and Hope] + [Swordsman] = [Demon Sword Murasame]. Tianlan's entry is [Male God] + [Succubus] = [Charming Male God]. The entry for the evil girl who shares the house is [Bad Lady]. Get her entry + [Goddess of Fertility] = [Ishtar]. The entry for wild monsters is [Mechanical Brain] + [Cyber Intelligence] = [Omnisiah] At first Tianlan just wanted to make more money in this world and live a good life with three meals a day. But through the synthesis of words, his summons pushed him to the only god seat. Elements: multiple female protagonists, male heroes, campus, relaxed, daily life.