Mon wo Mamoru Oshigoto/Buildings

Each area in the battlefield can be constructed with one building. Multiple buildings can be constructed per game-turn. Defensive buildings can protect allied units from attacks, recover their HP per battle-turn, and may grant offensive or defensive bonus. Traps can prevent enemies from moving or attacking. Some buildings can also unlock strategies.

Buildings
Offensive and defensive bonus are listed as Off+ and Def+, respectively.