I'm sorry, I haven't read the 'bumi manusia' novel specifically, so I can't provide a detailed synopsis. You can try to find it in a library or search for it on some book - related websites.
Well, 'kerana dia manusia biasa' could imply that because he/she is an ordinary person, there might be a focus on relatable human experiences in the novel. It could be about how this ordinary person faces common challenges, joys, and sorrows that the readers can easily identify with.
It could contribute by highlighting the universality of human experience. If the character is ordinary, their story can represent the experiences of many people, thus emphasizing a common theme that everyone can understand.
Some yuri manga similar to Citrus include 'Kase-san and Morning Glories' and 'Aoi Hana'. They have similar emotional depth and relationship developments. Also, 'Whispered Words' might appeal to you if you liked Citrus as it explores similar themes of female friendships and romantic feelings.
The all-female X-Men comics often feature strong female characters with diverse powers and personalities. They tend to focus on teamwork and empowerment.
The cause of the comic boyz' death is hard to say for sure. It could be related to their lifestyle, professional stress, or unforeseen circumstances. Without further details, it's difficult to give a precise answer.