Omi Tsukasa, who still holds a flame for his close friend and first love, Su-chan, becomes a new teacher assigned to his old school. There he spots Su-chan's doppelganger, a student named Sugimoto. Upon finding out that Sugimoto is Su-chan's nephew, Omi starts having an interest in him, much to the annoyance of his target of interest.
These are recommendation lists which contains
Omi Sensei no Binetsu. You should give them a visit if you're looking for similar novels to read. Alternatively, you can also
create your own list.