Horimiya is an usual high school jdrama adapted from shoujo manga. It depicts coming-of-age theme with first love. The only thing new is that the main lead is a loner who has an alternate personality. Everything else is predictable and precedent. Sometimes, quite silly too.

Romance is cute, intimate and personal.
Acting is good.
Both Suzuka Ouji and Kubota Sayu look cute.
Music is okay.
Like school dramas, it will take you back to your school days.
Production is of good quality.

We never see more of either leads' parents and their backstory. School jdramas normally don't focus on parents, so it was okay.

Horimiya neither disappoints nor exceeds expectations like a convenience store's cream cake. (A comfort treat indeed!)