Sure! The main characters are Miyazawa Yukino and Arima Soichiro.
Yukino always had the "perfect" image since pre-school to her first year of high school. Beautiful, kind, good humored, and very smart. But that was only her poker face. Soichiro was also like that but one day during they're last year of middle school he confessed his love to her.
At first she didnt think she loved him back but she did and they've been through alot of of things, thus their subtitles under the main title "His and her circumstances"
Both students are the top in their classes ( all though Arima is top above Yukino and she hates that xP She sometimes considers him a "rival" before a exam or test. )
Its a Romantic Comedy but it does have some really dark pasts and/or stories with almost every character; Particularly Arima's past.( Not saying more
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