Gachikoi Monogatari

Hikaru is working to help her friend from their college days, Kikuta, with his gameplay video streaming. One of her jobs is to protect Kikuta from his more obsessive followers. But she herself has no romantic feelings for him, and in fact she hasn't had any romantic relationships in a while. Until Hikaru becomes obsessed with a streamer who posts drawing videos… Caught between overlapping worlds — reality/fantasy, physical/virtual, truth/fiction — she must find "true love" for herself.

(Source: Kodansha, translated).