Kizoku Reijou. Ore ni Dake Natsuku

What awaited me after my reincarnation was a school life with aristocrats. I was reborn into a wealthy and arrogant noble family, but I try to behave as a modern person should, and act kindly to those around me without regardless of status. The aristocratic lady Luna seems to appreciate my behavior. She is usually quiet and doesn't open up to anyone, but she eats lunch with me, and even though she is shy, she is willing to go on a date with me. Eventually, other girls and maids at the school also join our group. Beautiful, elegant, and unexpectedly sweet. The relationship with these ladies grows deeper and deeper...? A sweet school love comedy, now begins! (Source: Fantasia Bunko, translated)