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We study vacua, walls and three-pronged junctions of mass-deformed nonlinearsigma models on $SO(2N)/U(N)$ and $Sp(N)/U(N)$ for generic $N$. We review anddiscuss the on-shell component Lagrangians of the ${\mathcal{N}}=2$ nonlinearsigma model on the Grassmann manifold, which are obtained in the${\mathcal{N}}=1$ superspace formalism and in the harmonic superspaceformalism. We also show that the K\"{a}hler potential of the ${\mathcal{N}}=2$nonlinear sigma model on the complex projective space, which is obtained in theprojective superspace formalism, is equivalent to the K\"{a}hler potential ofthe ${\mathcal{N}}=2$ nonlinear sigma model with the Fayet-Iliopoulosparameters $c^a=(0,0,c=1)$ on the complex projective space, which is obtainedin the ${\mathcal{N}}=1$ superspace formalism.

Junctions of mass-deformed nonlinear sigma models on $SO(2N)/U(N)$ and $Sp(N)/U(N)$ II