It could be about a heartwarming friendship. The Onee San, an older sister - like figure, takes the reader under her wing. She might teach the reader valuable life lessons, like how to cook a traditional dish or how to handle a difficult situation at school or work.
Often, a cliche childhood friend onee-san manga has repetitive tropes like the childhood promise that always comes true or the overused protective older sister stereotype. Also, the story might lack depth in character motivations and have very straightforward story arcs.
You can start by introducing the characters. Describe Onee San's personality traits, like whether she's kind, strict or adventurous. For the reader, think about their goals and dreams. Then, come up with an inciting incident that brings them together, such as the reader getting lost and Onee San helping them. This will set the story in motion.
Often, such stories have predictable plotlines like the childhood friend protecting the protagonist or having a secret crush. The characters might follow stereotypes too.
Well, 'eroge tensei onee novel' might be a piece of literature that combines elements of eroge, which often have adult or sexual themes in Japan, but if we assume it's not that kind of content. It could be about a story where a character experiences a reincarnation in a world that has some unique features and an important older sister - like figure in the plot. Maybe it's about the character's journey and how this 'onee' character influences it.
There is also 'Steins; Gate'. This visual novel is famous for its complex time - travel plot. The story is full of twists and turns, and the characters are unique. It has been highly praised for its engaging narrative and scientific concepts.
Since I'm not very clear on the exact nature of 'eroge tensei onee novel', it's difficult to recommend exact similar works. But if it's about reincarnation and a key female character, works like 'Tensei Slime' which has elements of reincarnation might be somewhat related in terms of the reincarnation aspect.
First, you can search for some well - rated 'onee chan visual novels' on gaming platforms. Look for ones with high user reviews. Then, start with the ones that have more beginner - friendly themes or gameplay if available.
I'm not very familiar with this specific light novel. It might be about a character who, through some form of reincarnation (tensei), becomes a dragon (ryuu). But without reading it, it's hard to say more precisely.
I'm not entirely sure as I haven't read it specifically. But generally, 'isekai' often involves a character being transported to another world. Maybe this web novel focuses on the adventures of a character in an isekai setting while having something to do with'mamono' which could be monsters or demons.