Generally I don't like them, because imo they rarely look good and they tend to mess with the flow of reading. But, the scanlators are free to include them if they want. I think of them as extra pages like the credits. I'm only truly bothered when the original image is not there as well, because that's like they're replacing the original work with the coloring and feels disrespectful.
Whew, this comment section sure is heated...
There's actually a chapter and a half missing between 2 and 3. Basically, the boys go to a surgery consultation in disguise. Later they argue about the surgery (Kishiwada really wants to get it), which ends up in sexy times and Andou almost kissing him. Another day, stuff happens, they get into another fight (which involves Kishida saying "there was no other meaning to the stuff we did besides mutual sexual relief," Andou looks hurt but laughs it off), Andou kisses Kishida on the street in public, but Kishida bites his tongue and tells Andou to "disappear like you did before"...
Anyway, you can read it starting from here: https://myreadingmanga.info/ibuki-asuka-chiku-bingo-vol-1-jp/3/
Ok at this point I feel like the author is just adding things for the sake of adding them... The whole deal with Kenta's mom felt pretty contrived. So she had feelings in the past, that's fine, but it is hard to believe a grown woman with a husband (that she loves?) would be so envious of Kenta and Yashiro's relationship as to act like that in front of the kids. It's weird because she says she is satisfied with her current life but her reaction suggests she isn't. Sorry if I'm not explaining well, I just think the situation was awkward. Just my thoughts.
You might also enjoy +a no tachiichi. The circumstances are similar (two people summoned), though it's a lot more cynical.
(╯°Д °)╯╧╧(╯°Д °)╯╧╧(╯°Д °)╯╧╧ I ran out of tables....that story sucked! I took your suggestion and man! i totally shouldnt have....but, you tried.
Hahaha a lot of people don't like the ending but it really fits the main character when you think about it. If you want another isekai recc I also like The Wrong Way to Use Healing Magic which is a lot more... positive? :'D