I love Rejuvenation. The story, even though it has some plot holes, it feels interesting and exciting, the characters are well developed, and almost everyone has their own moment to shine. However, my main problem appears with Melia. Specifically, her relationship with Venam, and the way the game mistakes self improvement with self deprecation.
For the most part, starting in the Terajuma arc, following Venam's reintroduction, and her own character arc. For the most part, Venam is a selfish and immature person. While this may be played for fun and laughs in the beginning, it turns into a real problem later in the story, which is one of Rejuvenation's (and by extent, reborn) strong points; presenting real world problems in a believable manner.
Most of Venam's character arc consists on her acknowledging her own flaws, and the way they impact the world around her. For the most part, this is something good, because it becomes the cornerstone of a healthy relationship. However, when the motivation to overcomes this flaws turns into "being good enough for Melia", ironically, this turns into something toxic. Now, Venam is not good enough to be with Melia. She puts Melia into a pedestal, hoping for her to recognize her (Venam) own achievements.
To put ot simply, Melia is a good friend, not only because she recognizes the flaws on the people around her, but because she actually tries to help those people overcome their flaws. However, this quickly turns into a game of entitlement, in which Melia becomes the one to decide if someone is good enough for her, or the one to determine a person's worth.
And, even though the main motivation for Venam's growth is being good enough for Melia, this turns into a big problem when the motivation becomes the end goal. Venam will now feel bad, not because she feels regretful of herself and her bad decisions, but because Melia will not see her as someone worthy of her company. Portrayed like this, a relationship based on the promise of self improvement, becomes one that promotes self deprecating, and a noticeable power-gap.