The ending point of the Tomo-chan anime in the manga can be a bit tricky to determine. Sometimes, the anime might condense or expand certain storylines compared to the manga. You might need to do a detailed comparison to figure it out precisely.
The '4chan homeless girl story' is likely a story that emerged from the 4chan platform concerning a homeless girl. Since 4chan is a place where people share all kinds of stories, this one might be about her journey through homelessness. It could cover things like her relationships with other homeless people, her hopes and dreams despite her situation, or her interactions with the non - homeless community. It might also talk about any efforts she makes to change her situation, whether it's seeking help from charities or trying to find a job to get off the streets.
Well, she could have the power of summoning. But instead of summoning cute animals or fairies, she would summon demons or other dark entities to do her bidding. Her magic might also include the ability to control the minds of others, but in a more insidious way than a typical magical girl. She could plant dark thoughts and desires in people's minds, making them act against their will. And she may have the power to create portals to other realms, especially those that are filled with danger and mystery, which she can use to either escape from or lead her enemies into.
The significance could be that it likely tells the story of Totto - chan, a little girl by the window. It might explore her experiences, her view from that window, and perhaps her growth and development. Maybe she has unique thoughts and encounters while being in that position by the window.
Well, it depends on personal taste. Some people might enjoy 'isekai wa smartphone to tomo ni' as a translated novel because it offers a familiar yet different take on the isekai concept. The use of the smartphone in a fantasy world creates various opportunities for the plot. However, others might find it a bit too simplistic or clichéd in terms of its overall plot structure and character arcs.