Class de Ichiban no Kanojo, Jitsu wa Bocchi no Ore no Kanojo desu

Our relationship is a secret to all others. A bittersweet boyfriend and girlfriend romcom! 「Youth」is such a pain. Loner by choice, Shinomiya Seiji together and this grade's top scorer and unobtainable flower Kanzaki Kotone. They absolutely can't allow themselves to cross each other's way in the classroom in order to keep the secret only they know of. Actually, those two, while hiding it from everyone else, are lovers. A boy who is unable to rely on others, and a spoiled girl who becomes honest as soon as they are left alone by themselves. They do things like eating lunch together at the literary club, using heavy rain as an excuse to not leave the house to have sleepover dates, or embracing each other secretly behind the gym building.... Even though they can't be together in class, they are always close to each other. (Source: Sneakerbunko)