Shikkaku Mon no Saikyou Kenja~ Sekai Saikyou no Kenja ga Sarani Tsuyoku Naru Tameni Tenseishimashita~ - Chapter 237 Strongest Sage, Down the Dungeon

As a precocious child, Lycoris suffers from a strange sense of deja vu. On the day her father told her about her fiancé, she realizes that her fiancé was a character from an otome game she once played in a previous life.

A genius talisman practitioner is reborn as a seven-year-old girl! However, her innocent appearance belies her vicious personality.

Descent of the Phoenix – 13 Years Old Princess Consort

The strongest female assassin from a special assassination force met her death one day on a mission. To her surprise, she woke up in the body of a 13 year old girl, Mu Rong Liu Yue. Through Liu Yue’s past memories, she found out that she was bullied due to the huge birthmark on her face, even though she came from a renowned family. Liu Yue was beaten to death by her own cousin, and that’s how she managed to enter Liu Yue’s battered body. The assassin then decided to live her life as Liu Yue and swore to avenge her death.

- Description from Novelupdates

A young love leads to a lifetime of entanglements. Zhao Mo Sheng is a university student with a sunny disposition. The bright and cheerful Mo Sheng fell in love at first sight with He Yi Chen, one of the top students from the Law Faculty. However, his poor communication skill, makes her depart sadly for overseas. Seven years later, Zhao Mo Sheng returned home and spotted him immediately in a crowded supermarket, …….

This is a very short and sweet story about two college sweethearts, who separated on a bitter note but fate tosses them together again seven years later.