3.862 out of 5 from 228 votes
A guy and girl are forced to stay together all the time or else they would be in danger of immediate death?
This happens to be the case in both B-Shock and Maga Tsuki. If you're interested in the theme you might want to give those two manga a try. Just keep in mind that B-Shock has some mature content at times and that Maga Tsuki is your (barely) above average harem series.
Troy is an insidious disease that causes all infected with it to vanish. Spread by touch, it runs rampant through the cities and countryside, and only ‘Sisters' with a resistance to its poison can endure its symptoms. Sister Elraine is one such young lady who is able to absorb Troy's poison for a short period of time, thus prolonging an infected's life, but like all Sisters she will eventually succumb to death at a young age. After beginning to have seizures that pre-empt this death Elraine is saved by a man named Kiri whose touch seems to negate the effects of Troy. Together, the two set forth to the Church as Kiri's immunity may be the key to curing the disease once and for all - but not if the organization Gazelle has anything to do with it..
In both series there is a boy and a girl who have to hold hands all the time. If they were to stop, one of them would die (the boy in Maga Tsuki case and the girl in Double Arts case). Maga Tsuki is a harem series, so which girl he has to hold hands with changes over time. Though it doesn't change the fact that all of them stick close to him at all the time and not because they have to, they stick to him because they want to. If you found that hand holding thing interesting, you can give both a try. Just keep in mind that Maga Tsuki has very little to offer beyond what you can find in your average harem series.
Let's see, what do we get when we add some goddesses and childhood friends? A harem and that's what both of those series are. Since both share a number of themes like goddesses (and most notably a goddess of misfortune). You can't expect any serious story or romance from either (you can expect fanservice though), but if you were comfortable with one series, then you'll be fine with the other one too.
A cute deity is the heroine in these manga, and she ends up living with the male protagonist after "awakening." Unsurprisingly, his childhood friend has a crush on him, and love triangles add drama to these romantic stories since the deity develops the same crush. If you enjoyed the aforementioned, give what you haven't read a try.
Both Umi no Misaki and Maga Tsuki feature a male lead who wants to properly respond to the feelings of the girls in his harem. That in itself is quite unusual and could make those series good (not too mention a good match), but...
Maga Tsuki is still a fairly generic harem series despite of that. Not to mention that, the male lead there gets the short end of stick most of the time. As for Umi no Misaki, the guy there gets treated really well for a change, but there is just way too much of the girls drooling and lusting over him (no, really). Oh, and did I mention it get's mature later on?