Lithia Po Cheena, president of the Holy Land Academy Student Council and granddaughter of Geminar's Pope, shoulders immense responsibilities. This relentless workload fuels chronic overwork and severe stress, sometimes causing her to collapse from exhaustion, a condition that consistently worries her close friend and assistant, Lapis. Lithia typically maintains a bitter and sarcastic demeanor, famously dubbing Kenshi Masaki a "wild animal" after their first meeting. Even after Kenshi provides an herbal tea that eases her stress symptoms, the nickname sticks and her sarcastic outlook largely endures.

Lithia possesses a strong aversion to medication and harbors a distinct fear of Morga, the former Student Council President, due to Morga's uncooperative nature and perceived lunacy. Despite her sharp exterior, Lithia demonstrates compassion in specific situations, such as supporting Hazuki and Ceres' romantic relationship and agreeing with other female students to help them escape the academy.

Her initial hostility towards Kenshi undergoes a gradual shift. While she continues using the "wild animal" epithet, her interactions with him increasingly feature visible flustered reactions, revealing underlying romantic feelings. These feelings culminate near the series' conclusion when she openly declares her desire for Kenshi's marriage rights. This declaration unintentionally sparks a competitive rush among other female characters, who similarly assert their own claims over Kenshi's marriage rights following the battle for the Holy Land.