Hmm I guess no one reviewed this since it isn't really popular. This is kind of an extra from the manga Saenai Heroine Sodatekata (Saekano in short). I'm warning you ahead this review might have some inaccurate facts since I did not read the original manga, Only because I know how it's likely gonna end and let's just say It's not in my favourite girl's favour. Yeah I sometimes act childish with these kind of things. This manga is only focusing on 1 of the 3 main girls of Saekano which is Eriri Spencer as you can oviously see from the title "Egoistic Lily" .It focuses on her relationship with the MC, mostly on their long so called "friendship". Since I'm one of the rare guys that liked Eriri the most I can recommend it to you guys, it was pretty fun to read. For just 15 chapters it was pretty fun to read and learn more about Tomoya and Eriri. The art was overall good except a few parts that looked like they were drawn more poorly. But Who cares I enjoyed it. And no, I'm still not going to watch the anime or read the original manga cause I just know how It'll turn out