A limit on the optical transient in the galaxy associated with Fast Radio Burst 150418

We search for an optical variability in the host galaxy of the radio variable object which is possibly associated with fast radio burst (FRB) 150418. We compare the images of the galaxy which are taken 1 day after the burst using Subaru/Suprime-Cam with the images which are taken $\sim$ 1 year after the burst using Gemini-South/GMOS. No optical variability is found in the images with the detection limit that absolute magnitude $\gtrsim -19$ (AB). This limit applies to optical variability of the active galactic nucleus in the galaxy on a timescale of $\sim$ 1 year, and also to luminosity of an optical counterpart of FRB~150418 one day after the burst if it has really occurred in the galaxy.